Red Deer, Alberta
Best weekend slot
Sunday 10am–4pm
Verdict: Good
rain earlier today, ground firm
Next mow
Today 7pm–9pm
Verdict: Good
no rain since Sunday, 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 21.1°C cooling to 0.0°C
Tuesday 1 September: Good. 7pm–9pm — no rain since Sunday, ground firm
Tuesday 1 September · 7pm–9pmConfident
7pm–9pm — no rain since Sunday, ground firm
- Good:Grass wetness
- Grass dryno rain since Sunday
- Good:Ground firmness
- Ground firm2mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.82
- Good:Temperature
- Temperature20°C
- Good:Wind
- Wind light12 km/h
- Sociable hours
- A bit early or late, but fine
Limiting factor:none
Wednesday 2 September: Good. 8am–9pm — no rain since Sunday, ground firm
Wednesday 2 September · 8am–9pmConfident
8am–9pm — no rain since Sunday, ground firm
- Good:Grass wetness
- Grass dryno rain since Sunday
- Good:Ground firmness
- Ground firm2mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.96
- Good:Temperature
- Temperature12°C
- Good:Wind
- Wind light2 km/h
- Sociable hours
- A bit early or late, but finestarts when it stops being antisocial
Limiting factor:none
Thursday 3 September: Good. 3pm–4pm — dried off since a shower 1 hour ago, ground firm
Thursday 3 September · 3pm–4pmConfident
3pm–4pm — dried off since a shower 1 hour ago, ground firm
- Marginal:Grass wetness
- Grass drydried off since a shower 1 hour ago
- Good:Ground firmness
- Ground firm2mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.81
- Good:Temperature
- Temperature12°C
- Good:Wind
- Wind light2 km/h
- Sociable hours
- Fine by the neighboursstarts once the rain has passed
Limiting factor:none
Friday 4 September: Good. 11am–9pm — rain earlier today, ground firm
Friday 4 September · 11am–9pmConfident
11am–9pm — rain earlier today, ground firm
- Good:Grass wetness
- Grass dryrain earlier today
- Good:Ground firmness
- Ground firm10mm rain over the last week
- Good:Growth
- Growing steadilygrowth potential 0.48
- Good:Temperature
- Temperature10°C
- Good:Wind
- Wind light10 km/h
- Sociable hours
- Fine by the neighboursstarts once the dew has burnt off
Limiting factor:none
Saturday 5 September: Good. 7pm–9pm — ground soft in places — 11mm rain over the last week
Saturday 5 September · 7pm–9pmReasonably confident
7pm–9pm — ground soft in places — 11mm rain over the last week
- Good:Grass wetness
- Grass drydried off since a shower 2 hours ago
- Good:Ground firmness
- Ground firm11mm rain over the last week
- Good:Growth
- Growing steadilygrowth potential 0.36
- Good:Temperature
- Temperature11°C
- Good:Wind
- Wind light15 km/h
- Sociable hours
- A bit early or late, but finestarts once the rain has passed
Limiting factor:ground firmness
Sunday 6 September: Good. 10am–4pm — rain earlier today, ground firm
Sunday 6 September · 10am–4pmReasonably confident
10am–4pm — rain earlier today, ground firm
- Good:Grass wetness
- Grass dryrain earlier today
- Good:Ground firmness
- Ground firm12mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.57
- Good:Temperature
- Temperature11°C
- Good:Wind
- Wind light15 km/h
- Sociable hours
- Fine by the neighboursstarts when it stops being antisocial
Limiting factor:none
Monday 7 September: Not worth it. No — 0.1mm of rain falling.
Monday 7 SeptemberReasonably confident
No — 0.1mm of rain falling.
- Marginal:Grass wetness
- Grass drydried off since a shower 0 hours ago
- Good:Ground firmness
- Ground firm11mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.65
- Good:Temperature
- Temperature12°C
- Good:Wind
- Wind light5 km/h
Limiting factor:grass wetness
Tuesday 8 September: Good. 7pm–9pm — dried off since a shower 1 hour ago, ground firm
Tuesday 8 September · 7pm–9pmReasonably confident
7pm–9pm — dried off since a shower 1 hour ago, ground firm
- Poor:Grass wetness
- Grass drydried off since a shower 0 hours ago
- Good:Ground firmness
- Ground firm13mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.66
- Good:Temperature
- Temperature13°C
- Good:Wind
- Wind light14 km/h
- Sociable hours
- A bit early or late, but finestarts once the rain has passed
Limiting factor:none
Wednesday 9 September: Good. 10am–9pm — grass dry — rain earlier today
Wednesday 9 September · 10am–9pmLow confidence this far out
10am–9pm — grass dry — rain earlier today
- Good:Grass wetness
- Grass dryrain earlier today
- Good:Ground firmness
- Ground firm27mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.66
- Good:Temperature
- Temperature12°C
- Good:Wind
- Wind light5 km/h
- Sociable hours
- Fine by the neighboursstarts once the dew has burnt off
Limiting factor:grass wetness
Thursday 10 September: Good. 8am–9pm — no rain since Tuesday, ground firm
Thursday 10 September · 8am–9pmLow confidence this far out
8am–9pm — no rain since Tuesday, ground firm
- Good:Grass wetness
- Grass dryno rain since Tuesday
- Good:Ground firmness
- Ground firm27mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.82
- Good:Temperature
- Temperature13°C
- Good:Wind
- Wind light7 km/h
- Sociable hours
- A bit early or late, but finestarts at first light
Limiting factor:none
Soil temperature
21.5°C71°F
at 6cm — germination depth
Cooling over the next 11 days.
Seeding conditions are open — soil is 21.5°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 21.5°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.