Soil temperature in Peoria, Arizona
Soil temperature
104°F40.1°C
at 6cm — germination depth
Cooling over the next 11 days.
Too warm to seed — the soil is heat-stressed. Wait for it to cool.
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 Peoria, Arizona is currently 40.1°C, and falling about 33.8°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. Too warm to seed — the soil is heat-stressed. Wait for it to cool.
8 of the next 10 days are good mowing days. As for the weekend: nothing doing. conditions never quite get there. And nothing else in the next 10 days either.
Nothing in the current forecast for Peoria opens a sensible window. The ground reads as firm after 10mm rain over the last week, and that is usually what decides it at this time of year.
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 39.5°C cooling to 0.0°C
Tuesday 1 September: Good. No — barely growing, growth potential 0.18.
Tuesday 1 SeptemberConfident
No — barely growing, growth potential 0.18.
- Good:Grass wetness
- Grass dryno rain since Monday
- Good:Ground firmness
- Ground firm10mm rain over the last week
- Poor:Growth
- Barely growinggrowth potential 0.18
- Poor:Temperature
- Heat stress37°C
- Good:Wind
- Wind light9 km/h
Limiting factor:growth
Wednesday 2 September: Good. No — barely growing, growth potential 0.09.
Wednesday 2 SeptemberConfident
No — barely growing, growth potential 0.09.
- Good:Grass wetness
- Grass dryno rain since Monday
- Good:Ground firmness
- Ground firm10mm rain over the last week
- Poor:Growth
- Barely growinggrowth potential 0.09
- Poor:Temperature
- Heat stress27°C
- Good:Wind
- Wind light4 km/h
Limiting factor:growth
Thursday 3 September: Good. No — barely growing, growth potential 0.09.
Thursday 3 SeptemberConfident
No — barely growing, growth potential 0.09.
- Good:Grass wetness
- Grass dryno rain since Monday
- Good:Ground firmness
- Ground firm10mm rain over the last week
- Poor:Growth
- Barely growinggrowth potential 0.09
- Poor:Temperature
- Cool26°C
- Good:Wind
- Wind light4 km/h
Limiting factor:growth
Friday 4 September: Good. No — barely growing, growth potential 0.03.
Friday 4 SeptemberConfident
No — barely growing, growth potential 0.03.
- Good:Grass wetness
- Grass drydried off since a shower 4 hours ago
- Good:Ground firmness
- Ground firm10mm rain over the last week
- Poor:Growth
- Barely growinggrowth potential 0.03
- Poor:Temperature
- Heat stress30°C
- Good:Wind
- Wind light15 km/h
Limiting factor:growth
Saturday 5 September: Good. No — 0.2mm of rain falling.
Saturday 5 SeptemberReasonably confident
No — 0.2mm of rain falling.
- Good:Grass wetness
- Grass dryno rain since Friday
- Good:Ground firmness
- Ground firm11mm rain over the last week
- Poor:Growth
- Barely growinggrowth potential 0.03
- Poor:Temperature
- Heat stress32°C
- Good:Wind
- Wind light8 km/h
Limiting factor:growth
Sunday 6 September: Good. No — barely growing, growth potential 0.03.
Sunday 6 SeptemberReasonably confident
No — barely growing, growth potential 0.03.
- Good:Grass wetness
- Grass dryrain earlier today
- Good:Ground firmness
- Ground firm11mm rain over the last week
- Poor:Growth
- Barely growinggrowth potential 0.03
- Poor:Temperature
- Heat stress31°C
- Good:Wind
- Wind light8 km/h
Limiting factor:growth
Monday 7 September: Good. No — barely growing, growth potential 0.01.
Monday 7 SeptemberReasonably confident
No — barely growing, growth potential 0.01.
- Good:Grass wetness
- Grass dryno rain since Sunday
- Good:Ground firmness
- Ground firm13mm rain over the last week
- Poor:Growth
- Barely growinggrowth potential 0.01
- Poor:Temperature
- Heat stress34°C
- Good:Wind
- Wind light6 km/h
Limiting factor:growth
Tuesday 8 September: Good. No — ground frozen.
Tuesday 8 SeptemberReasonably confident
No — ground frozen.
- Good:Grass wetness
- Grass dryno rain since Sunday
- Good:Ground firmness
- Ground firm3mm rain over the last week
- Poor:Growth
- Barely growinggrowth potential 0.01
- Poor:Temperature
- Heat stress34°C
- Good:Wind
- Wind light9 km/h
Limiting factor:growth
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 Sunday
- Good:Ground firmness
- Ground firm3mm rain over the last week
- Poor:Growth
- Barely growinggrowth potential 0.02
- Poor:Temperature
- Heat stress31°C
- Good:Wind
- Wind light14 km/h
Limiting factor:growth
Thursday 10 September: Not worth it. No — ground frozen.
Thursday 10 SeptemberLow confidence this far out
No — ground frozen.
- Good:Grass wetness
- Grass drydried off since a shower 5 hours ago
- Good:Ground firmness
- Ground firm3mm rain over the last week
- Poor:Growth
- Barely growinggrowth potential 0.08
- Poor:Temperature
- Heat stress29°C
- Good:Wind
- Wind light4 km/h
Limiting factor:growth
Nearby
Your own postcode
These are town-centre figures. Yours will differ a little.