Kingston, Ontario
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 waterlogged.
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 20.0°C cooling to 0.0°C
Tuesday 1 September: Not worth it. No — ground waterlogged.
Tuesday 1 SeptemberConfident
No — ground waterlogged.
- Marginal:Grass wetness
- Grass slightly damprain earlier today
- Marginal:Ground firmness
- Ground soft in places0mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 1.00
- Good:Temperature
- Temperature22°C
- Good:Wind
- Wind light6 km/h
Limiting factor:grass wetness
Wednesday 2 September: Not worth it. No — ground waterlogged.
Wednesday 2 SeptemberConfident
No — ground waterlogged.
- Good:Grass wetness
- Grass drydried off since a shower 1 hour ago
- Marginal:Ground firmness
- Ground soft in places17mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.99
- Good:Temperature
- Temperature18°C
- Good:Wind
- Wind light5 km/h
Limiting factor:ground firmness
Thursday 3 September: Not worth it. No — ground waterlogged.
Thursday 3 SeptemberConfident
No — ground waterlogged.
- Marginal:Grass wetness
- Grass dryrain earlier today
- Marginal:Ground firmness
- Ground soft in places18mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.98
- Good:Temperature
- Temperature17°C
- Good:Wind
- Wind light7 km/h
Limiting factor:grass wetness
Friday 4 September: Not worth it. No — ground waterlogged.
Friday 4 SeptemberConfident
No — ground waterlogged.
- Good:Grass wetness
- Grass dryno rain since Wednesday
- Marginal:Ground firmness
- Ground soft in places26mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 1.00
- Good:Temperature
- Temperature17°C
- Good:Wind
- Wind light8 km/h
Limiting factor:ground firmness
Saturday 5 September: Not worth it. No — ground waterlogged.
Saturday 5 SeptemberReasonably confident
No — ground waterlogged.
- Good:Grass wetness
- Grass dryno rain since Wednesday
- Marginal:Ground firmness
- Ground soft in places26mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.85
- Good:Temperature
- Temperature14°C
- Good:Wind
- Wind light16 km/h
Limiting factor:ground firmness
Sunday 6 September: Not worth it. No — ground waterlogged.
Sunday 6 SeptemberReasonably confident
No — ground waterlogged.
- Good:Grass wetness
- Grass dryrain earlier today
- Marginal:Ground firmness
- Ground soft in places26mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.88
- Good:Temperature
- Temperature13°C
- Good:Wind
- Wind light10 km/h
Limiting factor:ground firmness
Monday 7 September: Not worth it. No — ground waterlogged.
Monday 7 SeptemberReasonably confident
No — ground waterlogged.
- Good:Grass wetness
- Grass dryno rain since Saturday
- Marginal:Ground firmness
- Ground soft in places26mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.93
- Good:Temperature
- Temperature16°C
- Good:Wind
- Wind light5 km/h
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 Saturday
- Marginal:Ground firmness
- Ground soft in places26mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.75
- Good:Temperature
- Temperature15°C
- Good:Wind
- Wind light17 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.
- Good:Grass wetness
- Grass dryno rain since Saturday
- Good:Ground firmness
- Ground firm9mm rain over the last week
- Good:Growth
- Growing steadilygrowth potential 0.45
- Good:Temperature
- Temperature10°C
- Good:Wind
- Wind light15 km/h
Limiting factor:temperature
Thursday 10 September: Not worth it. No — ground frozen.
Thursday 10 SeptemberLow confidence this far out
No — ground frozen.
- Poor:Grass wetness
- Grass wetraining now
- Good:Ground firmness
- Ground firm8mm rain over the last week
- Marginal:Growth
- Growing slowlygrowth potential 0.34
- Good:Temperature
- Temperature11°C
- Good:Wind
- Wind light18 km/h
Limiting factor:grass wetness
Soil temperature
20.4°C69°F
at 6cm — germination depth
Cooling over the next 11 days.
Seeding conditions are open — soil is 20.4°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 20.4°C at 6cm and holding above 12.5°C.
Forecast from Open-Meteo, refreshed hourly. Soil temperature is modelled, not measured — how that works and where the thresholds come from.