N3, Barnet

N3, Barnet51.6001, -0.1938from your postcode

Mowing

When you can next cut it, and the best slot this weekend.

Best weekend slot

Nothing doing

Verdict: Not worth it

Nothing to cut — the grass is barely growing (growth potential 0.08). Conditions themselves are fine. And nothing else in the next 10 days either.

Next mow

Nothing above 65% this week

Verdict: Not worth it

0.6mm of rain falling.

Best chance is Monday at 25%.

  • Worth watching: Ground still soft. 41mm rain over the last week, coarse (sandy) soil. A mower will mark it, and a ride-on will rut it. More

The next 10 days

Each row is a day, morning on the left. The more solid a block, the more of the forecast runs agree you can mow. Open a day for the hour-by-hour forecast behind it.

  1. Monday 19 October: no hours worth using. No — ground firm, 4mm rain over the last week, coarse (sandy) soil.
    Monday 19 October, hour by hour
    5am6am7am8am9am10am11ammidday1pm2pm3pm4pm5pm6pm7pm8pm
    Chance——————<5%<5%<5%10%15%25%25%———
    VerdictAlready goneAlready goneAlready goneAlready goneAlready goneAlready goneForget itForget itForget itForget itPushing itPushing itPushing itdarkdarkdark
    Rainchance······0%0%0%0%0%1%0%0%0%4%
    Rainmm······——————————
    Grass······soakedsoakedsoakedsoakedsoakedsoakedwetwetwetdamp
    Ground······firmfirmfirmfirmfirmfirmfirmfirmfirmfirm
    Temp······10°11°11°11°12°12°12°12°12°12°
    Windkm/h······68811111212988
    Daylight······✓✓✓✓✓✓✓———

    Growth: barely growing (growth potential 0.16). Enough to be worth cutting. Growth decides whether a cut is wanted, not how well it will go, so it is not one of the rows above and does not move the chances.Chance is the share of 94 forecast runs — the same weather models re-run from slightly different starting conditions — in which you could have mowed that hour. The rows below it are what those runs expect on average, which is why an hour can look reasonable line by line and still fall short: the chance only counts runs where everything came together at once. Hover any cell for what the runs that ruled it out actually hit.

    Monday 19 OctoberReasonably confident

    No — ground firm, 4mm rain over the last week, coarse (sandy) soil.

    25% pushing it. About 2 runs in 3 found the ground too soft.

    Limiting factor:ground firmness

  2. Tuesday 20 October: no hours worth using. No — 0.6mm of rain falling.
    Tuesday 20 October, hour by hour
    5am6am7am8am9am10am11ammidday1pm2pm3pm4pm5pm6pm7pm8pm
    Chance———<5%<5%<5%<5%<5%<5%<5%<5%<5%<5%———
    VerdictdarkdarkdarkForget itForget itForget itForget itForget itForget itForget itForget itForget itForget itdarkdarkdark
    Rainchance62%62%59%49%58%68%55%69%63%52%54%36%28%18%14%7%
    Rainmm0.30.30.30.30.40.50.50.70.60.50.40.30.20.10.1—
    Grasssoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoaked
    Groundfirmfirmfirmfirmfirmfirmfirmfirmfirmfirmfirmfirmfirmfirmfirmfirm
    Temp12°12°12°12°12°12°11°11°12°12°12°13°13°12°11°11°
    Windkm/h14131313141513127871211151717
    Daylight———✓✓✓✓✓✓✓✓✓✓———

    Growth: growing slowly (growth potential 0.20). Enough to be worth cutting. Growth decides whether a cut is wanted, not how well it will go, so it is not one of the rows above and does not move the chances.Chance is the share of 94 forecast runs — the same weather models re-run from slightly different starting conditions — in which you could have mowed that hour. The rows below it are what those runs expect on average, which is why an hour can look reasonable line by line and still fall short: the chance only counts runs where everything came together at once. Hover any cell for what the runs that ruled it out actually hit.

    Tuesday 20 OctoberConfident

    No — 0.6mm of rain falling.

    <5% forget it. Almost every run found the grass too wet.

    Limiting factor:grass wetness

  3. Wednesday 21 October: no hours worth using. No — 0.6mm of rain falling.
    Wednesday 21 October, hour by hour
    5am6am7am8am9am10am11ammidday1pm2pm3pm4pm5pm6pm7pm8pm
    Chance———<5%<5%<5%<5%<5%<5%<5%<5%<5%<5%———
    VerdictdarkdarkdarkForget itForget itForget itForget itForget itForget itForget itForget itForget itForget itdarkdarkdark
    Rainchance19%19%25%40%41%43%27%28%28%30%37%38%32%30%29%16%
    Rainmm0.10.10.10.20.30.30.40.30.30.30.20.20.30.30.10.1
    Grasssoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoaked
    Groundfirmfirmfirmfirmfirmfirmfirmfirmfirmfirmfirmfirmfirmfirmfirmfirm
    Temp9°10°10°10°10°10°11°11°12°13°13°12°11°9°8°8°
    Windkm/h10121213151512191915121218273332
    Daylight———✓✓✓✓✓✓✓✓✓✓———

    Growth: barely growing (growth potential 0.11). Enough to be worth cutting. Growth decides whether a cut is wanted, not how well it will go, so it is not one of the rows above and does not move the chances.Chance is the share of 94 forecast runs — the same weather models re-run from slightly different starting conditions — in which you could have mowed that hour. The rows below it are what those runs expect on average, which is why an hour can look reasonable line by line and still fall short: the chance only counts runs where everything came together at once. Hover any cell for what the runs that ruled it out actually hit.

    Wednesday 21 OctoberConfident

    No — 0.6mm of rain falling.

    <5% forget it. Almost every run found the grass too wet.

    Limiting factor:grass wetness

  4. Thursday 22 October: nothing to cut. Nothing to cut — the grass is barely growing (growth potential 0.08).
    Thursday 22 October, hour by hour
    5am6am7am8am9am10am11ammidday1pm2pm3pm4pm5pm6pm7pm8pm
    Chance———15%10%10%15%20%25%25%40%60%60%———
    Verdictnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growing
    Rainchance19%11%12%2%4%4%3%3%3%16%10%18%21%24%24%41%
    Rainmm0.10.20.1——————0.1—0.10.20.10.20.4
    Grasssoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedwetwetdampdampdampwetwet
    Groundsoftsoftsoftsoftsoftsoftfirmfirmfirmfirmfirmfirmfirmfirmfirmfirm
    Temp6°6°6°6°7°7°8°9°9°10°11°12°12°12°11°11°
    Windkm/h432368910101010998910
    Daylight———✓✓✓✓✓✓✓✓✓✓———

    Growth: barely growing (growth potential 0.08). Not enough to be worth cutting, which is why no hour is recommended today whatever the weather does.Chance is the share of 94 forecast runs — the same weather models re-run from slightly different starting conditions — in which you could have mowed that hour. The rows below it are what those runs expect on average, which is why an hour can look reasonable line by line and still fall short: the chance only counts runs where everything came together at once. Hover any cell for what the runs that ruled it out actually hit.

    Thursday 22 OctoberLow confidence this far out

    Nothing to cut — the grass is barely growing (growth potential 0.08).

    60% nothing to cut. About 1 run in 3 found the grass barely growing.

    Nothing to cut. The odds below describe the weather only — growth decides whether a cut is wanted, and it is judged separately.

    Limiting factor:growth

  5. Friday 23 October: no hours worth using. No — 0.4mm of rain falling.
    Friday 23 October, hour by hour
    5am6am7am8am9am10am11ammidday1pm2pm3pm4pm5pm6pm7pm8pm
    Chance———<5%<5%<5%<5%<5%<5%<5%<5%<5%<5%———
    Verdictdarkdarkdarkground waterloggedground waterloggedground waterloggedground waterloggedground waterloggedground waterloggedground waterloggedground waterloggedground waterloggedground waterloggeddarkdarkdark
    Rainchance55%54%57%35%38%36%40%38%26%29%39%33%42%30%18%6%
    Rainmm0.70.60.70.20.40.20.20.30.10.40.20.20.30.30.20.1
    Grasssoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedsoakedwetwetwetwetwet
    Groundbogbogbogbogbogbogbogbogbogbogbogbogbogbogbogbog
    Temp12°12°11°10°10°9°9°9°10°10°9°9°9°8°8°8°
    Windkm/h23252420131218303840393736353332
    Daylight———✓✓✓✓✓✓✓✓✓✓———

    Growth: barely growing (growth potential 0.11). Enough to be worth cutting. Growth decides whether a cut is wanted, not how well it will go, so it is not one of the rows above and does not move the chances.Chance is the share of 94 forecast runs — the same weather models re-run from slightly different starting conditions — in which you could have mowed that hour. The rows below it are what those runs expect on average, which is why an hour can look reasonable line by line and still fall short: the chance only counts runs where everything came together at once. Hover any cell for what the runs that ruled it out actually hit.

    Friday 23 OctoberReasonably confident

    No — 0.4mm of rain falling.

    <5% forget it. Almost every run found the grass too wet.

    Limiting factor:grass wetness

  6. Saturday 24 October: nothing to cut. Nothing to cut — the grass is barely growing (growth potential 0.08). Conditions themselves are fine.
    Saturday 24 October, hour by hour
    5am6am7am8am9am10am11ammidday1pm2pm3pm4pm5pm6pm7pm8pm
    Chance———<5%<5%<5%<5%<5%<5%<5%70%65%60%———
    Verdictnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growing
    Rainchance4%2%9%2%9%7%9%8%6%14%16%20%22%24%14%20%
    Rainmm——0.1———0.20.2—0.20.30.50.40.70.40.5
    Grassdampdampdampdampdampdampdampdampdampdampdampdampdampdampwetwet
    Groundbogbogbogbogbogbogbogbogbogbogsoftsoftsoftsoftsoftsoft
    Temp7°6°6°6°6°7°8°9°10°11°12°12°11°10°9°9°
    Windkm/h21191817161515161617181816131214
    Daylight———✓✓✓✓✓✓✓✓✓✓———

    Growth: barely growing (growth potential 0.08). Not enough to be worth cutting, which is why no hour is recommended today whatever the weather does.Chance is the share of 94 forecast runs — the same weather models re-run from slightly different starting conditions — in which you could have mowed that hour. The rows below it are what those runs expect on average, which is why an hour can look reasonable line by line and still fall short: the chance only counts runs where everything came together at once. Hover any cell for what the runs that ruled it out actually hit.

    Saturday 24 OctoberReasonably confident

    Nothing to cut — the grass is barely growing (growth potential 0.08). Conditions themselves are fine.

    70% nothing to cut. About 1 run in 3 found the grass barely growing.

    Nothing to cut. The odds below describe the weather only — growth decides whether a cut is wanted, and it is judged separately.

    Limiting factor:growth

  7. Sunday 25 October: no hours worth using. No — 0.2mm of rain falling.
    Sunday 25 October, hour by hour
    5am6am7am8am9am10am11ammidday1pm2pm3pm4pm5pm6pm7pm8pm
    Chance——<5%<5%<5%<5%<5%<5%<5%<5%<5%<5%————
    Verdictdarkdarkground waterloggedground waterloggedground waterloggedground waterloggedground waterloggedground waterloggedground waterloggedground waterloggedground waterloggedground waterloggeddarkdarkdarkdark
    Rainchance16%12%18%10%4%14%12%6%12%6%18%8%14%14%10%10%
    Rainmm0.20.10.20.2—0.10.20.10.1—0.2—0.10.20.10.1
    Grasssoakedsoakedsoakedsoakedsoakedsoakedwetdampdampdampdampdampdampdampdampdry
    Groundbogbogbogbogbogbogbogbogbogbogbogbogbogbogbogbog
    Temp14°14°15°16°17°17°18°18°17°17°15°14°13°12°12°12°
    Windkm/h17182023252830313232313130302929
    Daylight——✓✓✓✓✓✓✓✓✓✓————

    Growth: growing slowly (growth potential 0.34). Enough to be worth cutting. Growth decides whether a cut is wanted, not how well it will go, so it is not one of the rows above and does not move the chances.Chance is the share of 94 forecast runs — the same weather models re-run from slightly different starting conditions — in which you could have mowed that hour. The rows below it are what those runs expect on average, which is why an hour can look reasonable line by line and still fall short: the chance only counts runs where everything came together at once. Hover any cell for what the runs that ruled it out actually hit.

    Sunday 25 OctoberReasonably confident

    No — 0.2mm of rain falling.

    <5% forget it. Almost every run found the grass too wet.

    Limiting factor:grass wetness

  8. Monday 26 October: nothing to cut. Nothing to cut — the grass is barely growing (growth potential 0.09).
    Monday 26 October, hour by hour
    5am6am7am8am9am10am11ammidday1pm2pm3pm4pm5pm6pm7pm8pm
    Chance——<5%<5%<5%<5%<5%<5%<5%<5%<5%<5%————
    Verdictnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growingnothing to cut — the grass is barely growing
    Rainchance12%14%20%14%10%14%14%16%20%8%14%18%16%8%10%18%
    Rainmm0.20.20.30.20.10.10.20.30.20.10.20.20.30.10.20.2
    Grasswetwetwetwetwetwetwetwetwetwetwetwetwetwetwetwet
    Groundbogbogbogbogbogbogbogbogbogbogbogbogbogbogbogbog
    Temp6°6°7°7°8°9°10°11°11°11°12°12°12°12°12°12°
    Windkm/h77810121314141312111213141412
    Daylight——✓✓✓✓✓✓✓✓✓✓————

    Growth: barely growing (growth potential 0.09). Not enough to be worth cutting, which is why no hour is recommended today whatever the weather does.Chance is the share of 94 forecast runs — the same weather models re-run from slightly different starting conditions — in which you could have mowed that hour. The rows below it are what those runs expect on average, which is why an hour can look reasonable line by line and still fall short: the chance only counts runs where everything came together at once. Hover any cell for what the runs that ruled it out actually hit.

    Monday 26 OctoberReasonably confident

    Nothing to cut — the grass is barely growing (growth potential 0.09).

    <5% nothing to cut. Almost every run found the grass barely growing.

    Nothing to cut. The odds below describe the weather only — growth decides whether a cut is wanted, and it is judged separately.

    Limiting factor:growth

  9. Tuesday 27 October: no hours worth using. No — 0.8mm of rain falling.
    Tuesday 27 October, hour by hour
    5am6am7am8am9am10am11ammidday1pm2pm3pm4pm5pm6pm7pm8pm
    Chance——<5%<5%<5%<5%<5%<5%<5%<5%<5%<5%————
    Verdictdarkdarkground waterloggedground waterloggedground waterloggedground waterloggedground waterloggedground waterloggedground waterloggedground waterloggedground waterloggedground waterloggeddarkdarkdarkdark
    Rainchance18%12%22%22%16%16%14%29%6%20%16%20%10%12%6%4%
    Rainmm0.30.10.30.20.20.20.30.2—0.10.40.30.20.1—0.1
    Grasswetwetwetsoakedsoakedwetwetwetdampdampdampdampdampwetdampdamp
    Groundsoftbogbogbogbogbogbogbogbogbogbogbogbogbogbogbog
    Temp14°15°15°15°16°16°16°16°15°15°14°14°13°12°12°12°
    Windkm/h21222223232323232322201917161615
    Daylight——✓✓✓✓✓✓✓✓✓✓————

    Growth: growing slowly (growth potential 0.30). Enough to be worth cutting. Growth decides whether a cut is wanted, not how well it will go, so it is not one of the rows above and does not move the chances.Chance is the share of 94 forecast runs — the same weather models re-run from slightly different starting conditions — in which you could have mowed that hour. The rows below it are what those runs expect on average, which is why an hour can look reasonable line by line and still fall short: the chance only counts runs where everything came together at once. Hover any cell for what the runs that ruled it out actually hit.

    Tuesday 27 OctoberLow confidence this far out

    No — 0.8mm of rain falling.

    <5% forget it. Almost every run found the grass too wet.

    Limiting factor:grass wetness

  10. Wednesday 28 October: no hours worth using. No — 0.2mm of rain falling.
    Wednesday 28 October, hour by hour
    5am6am7am8am9am10am11ammidday1pm2pm3pm4pm5pm6pm7pm8pm
    Chance——<5%<5%<5%<5%<5%<5%<5%<5%<5%<5%————
    Verdictdarkdarkground waterloggedground waterloggedground waterloggedground waterloggedground waterloggedground waterloggedground waterloggedground waterloggedground waterloggedground waterloggeddarkdarkdarkdark
    Rainchance12%2%4%0%4%2%2%4%6%0%12%6%4%8%8%4%
    Rainmm0.1—————————0.1———0.1—
    Grasswetdampdampdampdampdampdampdampdampdampdampdampdampdampdampdamp
    Groundbogbogbogbogbogbogbogbogbogbogbogbogbogbogbogbog
    Temp10°10°10°11°11°12°12°13°13°13°13°13°13°13°13°13°
    Windkm/h11111213151618181919191919191920
    Daylight——✓✓✓✓✓✓✓✓✓✓————

    Growth: barely growing (growth potential 0.20). Enough to be worth cutting. Growth decides whether a cut is wanted, not how well it will go, so it is not one of the rows above and does not move the chances.Chance is the share of 94 forecast runs — the same weather models re-run from slightly different starting conditions — in which you could have mowed that hour. The rows below it are what those runs expect on average, which is why an hour can look reasonable line by line and still fall short: the chance only counts runs where everything came together at once. Hover any cell for what the runs that ruled it out actually hit.

    Wednesday 28 OctoberLow confidence this far out

    No — 0.2mm of rain falling.

    <5% forget it. Almost every run found the grass too wet.

    Limiting factor:grass wetness

good to go touch and go dark, frost or snow already goneFainter means fewer forecast runs agree.

How you feel about mowing

Sensible middle ground.

Petrol or battery. The baseline.

Growth

How fast it is growing, and when it will need cutting again.

16%Barely growing

Of the fastest this grass could grow. The turf-industry measure, from today's temperature and day length.

The lawn is barely growing, so it does not need cutting. Leave it — taking leaf off a sward that cannot replace it costs more than it gives.

Held back by both temperature and short days — 10.5 hours of daylight at 11°C.

Over the next 10 days
about 6mm of leaf
Next cut due
not within the next ten days

This only knows temperature and day length. Feeding, watering, shade and cutting height all move it, so treat it as a rough guide.

Worked out from the PACE Turf growth potential model and day length —how and why.

Seeding

Soil temperature at germination depth, and when the window opens.

Soil temperature in N3, Barnet

10.8°C51°F

at 6cm — germination depth

Seeding conditions are open — soil is 10.8°C at 6cm and holding above 9°C.

Warming over the next 10 days.

Cross-checks against an independent estimate from air temperature (10.9°C), which agrees to within 0.2°C.

Almost every UK and Irish lawn is a ryegrass and fescue mix, whether it was sown or turfed. We assume that, and use 9°C as the seeding threshold.

Thresholds for every species

The differences are small. Ryegrass is the quickest off the mark; bluegrass is the slowest and wants the warmest soil. Everything else sits between.

Soil temperature at 6cm for reliable germination. Sources onthe method page.
SpeciesSoil neededDays to sprout
Perennial ryegrasslikely yours8°C5–10
Red / chewings fescuelikely yours8–10°C10–14
Tall fescue10–12°C10–14
Browntop bentColonial bentgrass10–12°C14–21
Smooth-stalked meadow grassKentucky bluegrass12–13°C14–28

Feeding

Why timing decides whether a feed does anything at all.

Coming in the app

Grass takes up nitrogen when it is growing. Feed a lawn that has stopped and most of it washes past the roots — which is why timing beats product choice.

Right now this lawn is not growing fast enough to make much use of a feed.

The app will work out the actual feeding windows for your lawn — along with weed control, scarifying and moss treatment — and tell you when they open without you having to check.

Why timing beats product choice

N3, Barnet in detail

Soil temperature in N3, Barnet is currently 10.8°C at 6cm, and barely moving. That depth matters because it is where grass seed sits and where roots start working, and it lags air temperature by days — which is why a warm afternoon here tells you very little on its own.

Lawns in this area are typically perennial ryegrass with fescue, which is what most lawns round here are sown with. That blend needs the soil to hold above 9°C before seed germinates reliably. Seeding conditions are open — soil is 10.8°C at 6cm and holding above 9°C.

1 of the next 10 days look workable. The other 9 are held back by wet grass or soft ground. As for the weekend: nothing doing. Nothing to cut — the grass is barely growing (growth potential 0.08). Conditions themselves are fine. And nothing else in the next 10 days either.

Nothing in the current forecast for N3 opens a sensible window. The ground reads as firm after 4mm rain over the last week, coarse (sandy) soil, and that is usually what decides it at this time of year.

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Chances counted across 94 forecast runs from MOGREPS-UK, 2km and ICON-EU-EPS, 7km and ECMWF IFS ensemble, 25km. Forecast from Open-Meteo, refreshed through the day. Soil temperature is modelled, not measured — how that works and where the thresholds come from.