Soil temperature in Winnipeg, Manitoba
Soil temperature
21.6°C71°F
at 6cm — germination depth
Cooling over the next 11 days.
Seeding conditions are open — soil is 21.6°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 |
Soil temperature at 6cm in Winnipeg, Manitoba is currently 21.6°C, and falling about 18.9°C over the next 11 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 21.6°C at 6cm and holding above 12.5°C.
6 of the next 10 days look workable. The other 4 are held back by wet grass or soft ground. The best weekend slot right now is Sunday midday–3pm, on the basis that grass dry — rain earlier today.
The next recommended window in Winnipeg opens at 7pm on Tuesday 1 September, and holds while conditions stay put. Underfoot, the ground reads as soft in places after 27mm 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 21.3°C cooling to 0.0°C
Tuesday 1 September: Good. 7pm–9pm — no rain since Monday, ground soft in places
Tuesday 1 September · 7pm–9pmConfident
7pm–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
- Temperature21°C
- Good:Wind
- Wind light13 km/h
- Sociable hours
- A bit early or late, but fine
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
Nearby
Your own postcode
These are town-centre figures. Yours will differ a little.