Charlottetown, Prince Edward Island
Best weekend slot
Nothing doing
Verdict: Not worth it
0.1mm of rain falling.
Tomorrow morning is your first decent window.
Next mow
Tomorrow 8am–8pm
Verdict: Good
no rain in over a week, ground firm
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 15.9°C cooling to 0.0°C
Tuesday 1 September: Not worth it. No — nothing quite good enough today.
Tuesday 1 SeptemberConfident
No — nothing quite good enough today.
- Good:Grass wetness
- Grass dryno rain in over a week
- Good:Ground firmness
- Ground firm0mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.72
- Good:Temperature
- Temperature14°C
- Good:Wind
- Wind light9 km/h
Limiting factor:none
Wednesday 2 September: Good. 8am–8pm — no rain in over a week, ground firm
Wednesday 2 September · 8am–8pmConfident
8am–8pm — no rain in over a week, ground firm
- Good:Grass wetness
- Grass dryno rain in over a week
- Good:Ground firmness
- Ground firm0mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.68
- Good:Temperature
- Temperature12°C
- Good:Wind
- Wind light6 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 in over a week, ground firm
Thursday 3 September · 8am–2pmConfident
8am–2pm — no rain in over a week, ground firm
- Good:Grass wetness
- Grass dryno rain in over a week
- Good:Ground firmness
- Ground firm0mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.75
- Good:Temperature
- Temperature11°C
- Good:Wind
- Wind light7 km/h
- Sociable hours
- A bit early or late, but finestarts when it stops being antisocial
Limiting factor:none
Friday 4 September: Marginal. No — 2.5mm of rain falling.
Friday 4 SeptemberConfident
No — 2.5mm of rain falling.
- Poor:Grass wetness
- Grass wetraining now
- Good:Ground firmness
- Ground firm1mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.86
- Good:Temperature
- Temperature16°C
- Good:Wind
- Wind light18 km/h
Limiting factor:grass wetness
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 wetraining now
- Marginal:Ground firmness
- Ground soft in places16mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.84
- Good:Temperature
- Temperature17°C
- Good:Wind
- Wind light10 km/h
Limiting factor:grass wetness
Sunday 6 September: Marginal. No — 1.2mm of rain falling.
Sunday 6 SeptemberReasonably confident
No — 1.2mm of rain falling.
- Poor:Grass wetness
- Grass wetraining now
- Marginal:Ground firmness
- Ground soft in places28mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.62
- Good:Temperature
- Temperature14°C
- Marginal:Wind
- Breezy29 km/h
Limiting factor:grass wetness
Monday 7 September: Good. 1pm–8pm — dried off since a shower 1 hour ago, ground soft in places
Monday 7 September · 1pm–8pmReasonably confident
1pm–8pm — dried off since a shower 1 hour ago, ground soft in places
- Good:Grass wetness
- Grass drydried off since a shower 0 hours ago
- Good:Ground firmness
- Ground soft in places35mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.66
- Good:Temperature
- Temperature14°C
- Good:Wind
- Wind light22 km/h
- Sociable hours
- Fine by the neighboursstarts once the rain has passed
Limiting factor:none
Tuesday 8 September: Good. 8am–4pm — rain earlier today, ground firm
Tuesday 8 September · 8am–4pmReasonably confident
8am–4pm — rain earlier today, ground firm
- Good:Grass wetness
- Grass dryrain earlier today
- Good:Ground firmness
- Ground firm36mm rain over the last week
- Good:Growth
- Growing steadilygrowth potential 0.49
- Good:Temperature
- Temperature12°C
- Good:Wind
- Wind light13 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 dryrain earlier today
- Good:Ground firmness
- Ground firm36mm rain over the last week
- Marginal:Growth
- Growing slowlygrowth potential 0.23
- Good:Temperature
- Temperature11°C
- Good:Wind
- Wind light17 km/h
Limiting factor:growth
Thursday 10 September: Not worth it. No — ground frozen.
Thursday 10 SeptemberLow confidence this far out
No — ground frozen.
- Marginal:Grass wetness
- Grass dryno rain since Tuesday
- Good:Ground firmness
- Ground firm36mm rain over the last week
- Marginal:Growth
- Growing slowlygrowth potential 0.24
- Good:Temperature
- Temperature11°C
- Good:Wind
- Wind light12 km/h
Limiting factor:growth
Soil temperature
16.2°C61°F
at 6cm — germination depth
Cooling over the next 11 days.
Seeding conditions are open — soil is 16.2°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 16.2°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.