Moncton, New Brunswick
Mowing
When you can next cut it, and the best slot this weekend.
Best weekend slot
Nothing doing
Verdict: Not worth it
ground waterlogged. And nothing else in the next 10 days either.
Next mow
Not in the next 10 days
Verdict: Not worth it
ground saturated, 107mm rain over the last week.
The next 10 days
Column height is how mowable the day is; the lighter band is the best stretch within it. The line is soil temperature at 6cm. It crosses the seeding threshold inside this forecast.
12.5°C — seeding
Soil at 6cm 15.8°C cooling to 0.0°C
Wednesday 2 September: Not worth it. No — ground saturated, 107mm rain over the last week.
Wednesday 2 SeptemberConfident
No — ground saturated, 107mm rain over the last week.
- Good:Grass wetness
- Grass dryno rain since Sunday
- Poor:Ground firmness
- Ground saturated107mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.66
- Good:Temperature
- Temperature13°C
- Good:Wind
- Wind light5 km/h
Limiting factor:ground firmness
Thursday 3 September: Good. No — ground soft, 107mm rain over the last week.
Thursday 3 SeptemberConfident
No — ground soft, 107mm rain over the last week.
- Good:Grass wetness
- Grass dryno rain since Sunday
- Poor:Ground firmness
- Ground soft107mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.74
- Good:Temperature
- Temperature13°C
- Good:Wind
- Wind light7 km/h
Limiting factor:ground firmness
Friday 4 September: Not worth it. No — 0.7mm of rain falling.
Friday 4 SeptemberConfident
No — 0.7mm of rain falling.
- Poor:Grass wetness
- Grass wetraining now
- Poor:Ground firmness
- Ground saturated107mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.83
- Good:Temperature
- Temperature15°C
- Good:Wind
- Wind light8 km/h
Limiting factor:grass wetness
Saturday 5 September: Not worth it. No — ground waterlogged.
Saturday 5 SeptemberConfident
No — ground waterlogged.
- Poor:Grass wetness
- Grass wetrain 1 hour ago
- Poor:Ground firmness
- Ground saturated40mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.65
- Good:Temperature
- Temperature15°C
- Good:Wind
- Wind light17 km/h
Limiting factor:grass wetness
Sunday 6 September: Not worth it. No — 1.0mm of rain falling.
Sunday 6 SeptemberReasonably confident
No — 1.0mm of rain falling.
- Poor:Grass wetness
- Grass wetraining now
- Poor:Ground firmness
- Ground saturated16mm rain over the last week
- Good:Growth
- Growing steadilygrowth potential 0.48
- Good:Temperature
- Temperature13°C
- Good:Wind
- Wind light21 km/h
Limiting factor:grass wetness
Monday 7 September: Good. No — ground waterlogged.
Monday 7 SeptemberReasonably confident
No — ground waterlogged.
- Good:Grass wetness
- Grass dryrain earlier today
- Poor:Ground firmness
- Ground saturated29mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.69
- Good:Temperature
- Temperature14°C
- Good:Wind
- Wind light13 km/h
Limiting factor:ground firmness
Tuesday 8 September: Good. No — 0.2mm of rain falling.
Tuesday 8 SeptemberReasonably confident
No — 0.2mm of rain falling.
- Good:Grass wetness
- Grass dryno rain since Sunday
- Poor:Ground firmness
- Ground saturated29mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.80
- Good:Temperature
- Temperature13°C
- Good:Wind
- Wind light12 km/h
Limiting factor:ground firmness
Wednesday 9 September: Good. No — ground waterlogged.
Wednesday 9 SeptemberReasonably confident
No — ground waterlogged.
- Good:Grass wetness
- Grass dryrain earlier today
- Poor:Ground firmness
- Ground soft29mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.79
- Good:Temperature
- Temperature13°C
- Good:Wind
- Wind light4 km/h
Limiting factor:ground firmness
Thursday 10 September: Not worth it. No — ground frozen.
Thursday 10 SeptemberLow confidence this far out
No — ground frozen.
- Marginal:Grass wetness
- Grass drydried off since a shower 0 hours ago
- Marginal:Ground firmness
- Ground soft in places29mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.93
- Good:Temperature
- Temperature18°C
- Good:Wind
- Wind light22 km/h
Limiting factor:grass wetness
Friday 11 September: Not worth it. No — ground frozen.
Friday 11 SeptemberLow confidence this far out
No — ground frozen.
- Good:Grass wetness
- Grass dryrain earlier today
- Good:Ground firmness
- Ground soft in places32mm rain over the last week
- Marginal:Growth
- Growing slowlygrowth potential 0.30
- Good:Temperature
- Temperature11°C
- Good:Wind
- Wind light11 km/h
Limiting factor:growth
Growth
How fast it is growing, and when it will need cutting again.
0.66Growing strongly
Growth potential, 0 to 1 — the turf-industry measure of how fast grass can grow at today's temperature and day length.
Putting on about 4.0mm a day. A lawn cut today would be ready for another in around 4 days.
Worked out from the PACE Turf growth potential model and day length —how and why.
What this means right now
Seeding
Soil temperature at germination depth, and when the window opens.
Soil temperature
15.8°C60°F
at 6cm — germination depth
Cooling over the next 10 days.
Seeding conditions are open — soil is 15.8°C at 6cm and holding above 12.5°C.
Cross-checks against an independent estimate from air temperature (16.5°C), which agrees to within 0.8°C.
Most cool-season lawns in the northern US and Canada are bluegrass, tall fescue, or a mix of the two. We assume that, and use12.5°C as the seeding threshold.
I know what grass I have
The differences are small. Ryegrass is the quickest off the mark; bluegrass is the slowest and wants the warmest soil. Everything else sits between.
| Species | Soil temp | Days |
|---|---|---|
| Perennial ryegrass | 8°C | 5–10 |
| Red / chewings fescue | 8–10°C | 10–14 |
| Tall fescuelikely yours | 10–12°C | 10–14 |
| Browntop bentColonial bentgrass | 10–12°C | 14–21 |
| Smooth-stalked meadow grassKentucky bluegrasslikely yours | 12–13°C | 14–28 |
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 growing well enough to use 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.
Moncton, New Brunswick in detail
Soil temperature at 6cm in Moncton, New Brunswick is currently 15.8°C, and falling about 15.7°C over the next 10 days. 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 Kentucky bluegrass with tall fescue, the usual mix for cool-season lawns at this latitude. That blend needs the soil to hold above 12.5°C before seed germinates reliably. Seeding conditions are open — soil is 15.8°C at 6cm and holding above 12.5°C.
4 of the next 10 days look workable. The other 6 are held back by wet grass or soft ground. As for the weekend: nothing doing. ground waterlogged. And nothing else in the next 10 days either.
Nothing in the current forecast for Moncton opens a sensible window. The ground reads as saturated after 107mm rain over the last week, and that is usually what decides it at this time of year.
Forecast from Open-Meteo, refreshed hourly. Soil temperature is modelled, not measured — how that works and where the thresholds come from.