Soil temperature in Kitchener, Ontario
Soil temperature
24.3°C76°F
at 6cm — germination depth
Cooling over the next 11 days.
Seeding conditions are open — soil is 24.3°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 Kitchener, Ontario is currently 24.3°C, and falling about 22.6°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 24.3°C at 6cm and holding above 12.5°C.
7 of the next 10 days are good mowing days. The best weekend slot right now is Sunday 10am–8pm, on the basis that no rain since Friday, ground firm.
The next recommended window in Kitchener opens at 4pm on Wednesday 2 September, and holds while conditions stay put. Underfoot, the ground reads as firm after 22mm 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 22.7°C cooling to 0.0°C
Tuesday 1 September: Not worth it. No — cool, 26°C.
Tuesday 1 SeptemberConfident
No — cool, 26°C.
- Good:Grass wetness
- Grass dryno rain since Monday
- Good:Ground firmness
- Ground firm22mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.78
- Good:Temperature
- Temperature22°C
- Good:Wind
- Wind light2 km/h
Limiting factor:temperature
Wednesday 2 September: Good. 4pm–8pm — rain earlier today, ground firm
Wednesday 2 September · 4pm–8pmConfident
4pm–8pm — rain earlier today, ground firm
- Good:Grass wetness
- Grass drydried off since a shower 3 hours ago
- Good:Ground firmness
- Ground firm22mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.83
- Marginal:Temperature
- Temperature21°C
- Good:Wind
- Wind light14 km/h
- Sociable hours
- Fine by the neighbours
Limiting factor:none
Thursday 3 September: Good. 8am–8pm — grass dry — rain earlier today
Thursday 3 September · 8am–8pmConfident
8am–8pm — grass dry — rain earlier today
- Good:Grass wetness
- Grass dryrain earlier today
- Good:Ground firmness
- Ground firm23mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.96
- Good:Temperature
- Temperature18°C
- Good:Wind
- Wind light4 km/h
- Sociable hours
- A bit early or late, but finestarts once the dew has burnt off
Limiting factor:grass wetness
Friday 4 September: Good. 8am–8pm — grass dry — rain earlier today
Friday 4 September · 8am–8pmConfident
8am–8pm — grass dry — rain earlier today
- Good:Grass wetness
- Grass dryrain earlier today
- Good:Ground firmness
- Ground firm23mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.98
- Good:Temperature
- Temperature15°C
- Good:Wind
- Wind light6 km/h
- Sociable hours
- A bit early or late, but finestarts once the dew has burnt off
Limiting factor:grass wetness
Saturday 5 September: Good. 8am–8pm — no rain since Friday, ground firm
Saturday 5 September · 8am–8pmReasonably confident
8am–8pm — no rain since Friday, ground firm
- Good:Grass wetness
- Grass dryno rain since Friday
- Good:Ground firmness
- Ground firm24mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.85
- Good:Temperature
- Temperature12°C
- Good:Wind
- Wind light11 km/h
- Sociable hours
- A bit early or late, but finestarts when it stops being antisocial
Limiting factor:none
Sunday 6 September: Good. 10am–8pm — no rain since Friday, ground firm
Sunday 6 September · 10am–8pmReasonably confident
10am–8pm — no rain since Friday, ground firm
- Good:Grass wetness
- Grass dryno rain since Friday
- Good:Ground firmness
- Ground firm24mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.77
- Good:Temperature
- Temperature12°C
- Good:Wind
- Wind light6 km/h
- Sociable hours
- Fine by the neighboursstarts once the dew has burnt off
Limiting factor:none
Monday 7 September: Good. 8am–8pm — no rain since Friday, ground firm
Monday 7 September · 8am–8pmReasonably confident
8am–8pm — no rain since Friday, ground firm
- Good:Grass wetness
- Grass dryno rain since Friday
- Good:Ground firmness
- Ground firm22mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.85
- Good:Temperature
- Temperature12°C
- Good:Wind
- Wind light4 km/h
- Sociable hours
- A bit early or late, but finestarts once the dew has burnt off
Limiting factor:none
Tuesday 8 September: Good. 8am–8pm — no rain since Friday, ground firm
Tuesday 8 September · 8am–8pmReasonably confident
8am–8pm — no rain since Friday, ground firm
- Good:Grass wetness
- Grass dryno rain since Friday
- Good:Ground firmness
- Ground firm2mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.85
- Good:Temperature
- Temperature16°C
- Good:Wind
- Wind light9 km/h
- Sociable hours
- A bit early or late, but finestarts when it stops being antisocial
Limiting factor:none
Wednesday 9 September: Not worth it. No — ground frozen.
Wednesday 9 SeptemberLow confidence this far out
No — ground frozen.
- Good:Grass wetness
- Grass dryno rain since Friday
- Good:Ground firmness
- Ground firm2mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.67
- Good:Temperature
- Temperature12°C
- Good:Wind
- Wind light17 km/h
Limiting factor:none
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
- Good:Ground firmness
- Ground firm2mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.91
- Good:Temperature
- Temperature19°C
- Good:Wind
- Wind light19 km/h
Limiting factor:grass wetness
Nearby
Your own postcode
These are town-centre figures. Yours will differ a little.