Winnipeg, Manitoba
Best weekend slot
Sunday midday–3pm
Verdict: Good
grass dry — rain earlier today
Next mow
Today 8pm–9pm
Verdict: Good
no rain since Monday, ground soft in places
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 21.0°C cooling to 0.0°C
Tuesday 1 September: Good. 8pm–9pm — no rain since Monday, ground soft in places
Tuesday 1 September · 8pm–9pmConfident
8pm–9pm — no rain since Monday, ground soft in places
- Good:Grass wetness
- Grass dryno rain since Monday
- Good:Ground firmness
- Ground soft in places27mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.94
- Good:Temperature
- Temperature19°C
- Good:Wind
- Wind light9 km/h
- Sociable hours
- Your neighbours will remember it
Limiting factor:none
Wednesday 2 September: Good. 8am–9pm — no rain since Monday, ground firm
Wednesday 2 September · 8am–9pmConfident
8am–9pm — no rain since Monday, ground firm
- Good:Grass wetness
- Grass dryno rain since Monday
- Good:Ground firmness
- Ground firm27mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.94
- Good:Temperature
- Temperature12°C
- Good:Wind
- Wind light4 km/h
- Sociable hours
- A bit early or late, but finestarts when it stops being antisocial
Limiting factor:none
Thursday 3 September: Good. 8am–2pm — no rain since Monday, ground firm
Thursday 3 September · 8am–2pmConfident
8am–2pm — no rain since Monday, ground firm
- Good:Grass wetness
- Grass dryno rain since Monday
- Good:Ground firmness
- Ground firm27mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 1.00
- Good:Temperature
- Temperature14°C
- Good:Wind
- Wind light12 km/h
- Sociable hours
- A bit early or late, but finestarts when it stops being antisocial
Limiting factor:none
Friday 4 September: Good. 11am–3pm — rain earlier today, ground firm
Friday 4 September · 11am–3pmConfident
11am–3pm — rain earlier today, ground firm
- Good:Grass wetness
- Grass dryrain earlier today
- Good:Ground firmness
- Ground firm32mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.94
- Marginal:Temperature
- Temperature17°C
- Good:Wind
- Wind light8 km/h
- Sociable hours
- Fine by the neighboursstarts once the dew has burnt off
Limiting factor:none
Saturday 5 September: Not worth it. No — 0.1mm of rain falling.
Saturday 5 SeptemberReasonably confident
No — 0.1mm of rain falling.
- Poor:Grass wetness
- Grass drydried off since a shower 0 hours ago
- Marginal:Ground firmness
- Ground soft in places35mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.91
- Good:Temperature
- Temperature20°C
- Good:Wind
- Wind light16 km/h
Limiting factor:ground firmness
Sunday 6 September: Good. midday–3pm — grass dry — rain earlier today
Sunday 6 September · midday–3pmReasonably confident
midday–3pm — grass dry — rain earlier today
- Marginal:Grass wetness
- Grass dryrain earlier today
- Marginal:Ground firmness
- Ground soft in places51mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.94
- Marginal:Temperature
- Temperature17°C
- Good:Wind
- Wind light9 km/h
- Sociable hours
- Fine by the neighboursstarts once the dew has burnt off
Limiting factor:grass wetness
Monday 7 September: Good. 8am–8pm — ground soft in places — 54mm rain over the last week
Monday 7 September · 8am–8pmReasonably confident
8am–8pm — ground soft in places — 54mm rain over the last week
- Good:Grass wetness
- Grass dryno rain since Sunday
- Good:Ground firmness
- Ground soft in places54mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.85
- Good:Temperature
- Temperature14°C
- Good:Wind
- Wind light21 km/h
- Sociable hours
- A bit early or late, but finestarts when it stops being antisocial
Limiting factor:ground firmness
Tuesday 8 September: Not worth it. No — ground waterlogged.
Tuesday 8 SeptemberReasonably confident
No — ground waterlogged.
- Good:Grass wetness
- Grass dryno rain since Sunday
- Marginal:Ground firmness
- Ground soft in places27mm rain over the last week
- Good:Growth
- Growing steadilygrowth potential 0.37
- Good:Temperature
- Temperature11°C
- Good:Wind
- Wind light13 km/h
Limiting factor:ground firmness
Wednesday 9 September: Not worth it. No — ground frozen.
Wednesday 9 SeptemberLow confidence this far out
No — ground frozen.
- Poor:Grass wetness
- Grass wetraining now
- Poor:Ground firmness
- Ground soft32mm rain over the last week
- Good:Growth
- Growing steadilygrowth potential 0.38
- Good:Temperature
- Temperature12°C
- Good:Wind
- Wind light12 km/h
Limiting factor:grass wetness
Thursday 10 September: Not worth it. No — ground frozen.
Thursday 10 SeptemberLow confidence this far out
No — ground frozen.
- Good:Grass wetness
- Grass dryrain earlier today
- Poor:Ground firmness
- Ground soft66mm rain over the last week
- Good:Growth
- Growing steadilygrowth potential 0.45
- Good:Temperature
- Temperature10°C
- Good:Wind
- Wind light3 km/h
Limiting factor:grass wetness
Soil temperature
21.0°C70°F
at 6cm — germination depth
Cooling over the next 11 days.
Seeding conditions are open — soil is 21.0°C at 6cm and holding above 12.5°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 |
What this means right now
Good: Seeding window open
Seeding conditions are open — soil is 21.0°C at 6cm and holding above 12.5°C.
Warning: Heat stress
Thursday 3 September gets hot enough to stress the sward. Mow early or late, and raise the height.
Worth watching: Ground still soft
32mm rain over the last week. A mower will mark it, and a ride-on will rut it.
Forecast from Open-Meteo, refreshed hourly. Soil temperature is modelled, not measured — how that works and where the thresholds come from.