Soil temperature in Green Bay, Wisconsin
Soil temperature
83°F28.2°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 Green Bay, Wisconsin is currently 28.2°C, and falling about 25.4°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.
7 of the next 10 days are good mowing days. The best weekend slot right now is Monday 10am–2pm, on the basis that ground soft in places — 41mm rain over the last week.
The next recommended window in Green Bay opens at 7pm on Tuesday 1 September, and holds while conditions stay put. Underfoot, the ground reads as firm after 1mm 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 28.2°C cooling to 0.0°C
Tuesday 1 September: Good. 7pm–8pm — heat stress — 28°C
Tuesday 1 September · 7pm–8pmConfident
7pm–8pm — heat stress — 28°C
- Good:Grass wetness
- Grass dryno rain since Saturday
- Good:Ground firmness
- Ground firm1mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.62
- Poor:Temperature
- Heat stress28°C
- Good:Wind
- Wind light9 km/h
- Sociable hours
- A bit early or late, but fine
Limiting factor:temperature
Wednesday 2 September: Good. 8am–8pm — no rain since Saturday, ground firm
Wednesday 2 September · 8am–8pmConfident
8am–8pm — no rain since Saturday, ground firm
- Good:Grass wetness
- Grass dryno rain since Saturday
- Good:Ground firmness
- Ground firm1mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.79
- Good:Temperature
- Temperature21°C
- Good:Wind
- Wind light11 km/h
- Sociable hours
- A bit early or late, but finestarts when it stops being antisocial
Limiting factor:none
Thursday 3 September: Good. 8am–1pm — no rain since Saturday, ground firm
Thursday 3 September · 8am–1pmConfident
8am–1pm — no rain since Saturday, ground firm
- Good:Grass wetness
- Grass dryno rain since Saturday
- Good:Ground firmness
- Ground firm1mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.84
- Marginal:Temperature
- Temperature20°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: Good. 3pm–8pm — ground soft — 2mm rain over the last week
Friday 4 September · 3pm–8pmConfident
3pm–8pm — ground soft — 2mm rain over the last week
- Poor:Grass wetness
- Grass dryrain earlier today
- Poor:Ground firmness
- Ground soft2mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.97
- Good:Temperature
- Temperature19°C
- Good:Wind
- Wind light9 km/h
- Sociable hours
- Fine by the neighbours
Limiting factor:ground firmness
Saturday 5 September: Good. 8am–8pm — ground soft in places — 40mm rain over the last week
Saturday 5 September · 8am–8pmReasonably confident
8am–8pm — ground soft in places — 40mm rain over the last week
- Good:Grass wetness
- Grass dryno rain since Friday
- Marginal:Ground firmness
- Ground soft in places40mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.96
- Marginal:Temperature
- Temperature19°C
- Good:Wind
- Wind light7 km/h
- Sociable hours
- A bit early or late, but finestarts when it stops being antisocial
Limiting factor:ground firmness
Sunday 6 September: Marginal. No — 0.2mm of rain falling.
Sunday 6 SeptemberReasonably confident
No — 0.2mm of rain falling.
- Marginal:Grass wetness
- Grass dryno rain since Friday
- Marginal:Ground firmness
- Ground soft in places39mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.98
- Good:Temperature
- Temperature17°C
- Good:Wind
- Wind light9 km/h
Limiting factor:grass wetness
Monday 7 September: Good. 10am–2pm — ground soft in places — 41mm rain over the last week
Monday 7 September · 10am–2pmReasonably confident
10am–2pm — ground soft in places — 41mm rain over the last week
- Good:Grass wetness
- Grass dryrain earlier today
- Good:Ground firmness
- Ground soft in places41mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.97
- Marginal:Temperature
- Temperature18°C
- Good:Wind
- Wind light8 km/h
- Sociable hours
- Fine by the neighboursstarts when it stops being antisocial
Limiting factor:ground firmness
Tuesday 8 September: Good. 8am–8pm — rain earlier today, ground firm
Tuesday 8 September · 8am–8pmReasonably confident
8am–8pm — rain earlier today, ground firm
- Good:Grass wetness
- Grass dryrain earlier today
- Good:Ground firmness
- Ground firm42mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.83
- Good:Temperature
- Temperature16°C
- Good:Wind
- Wind light21 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 Tuesday
- Good:Ground firmness
- Ground firm42mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.98
- Good:Temperature
- Temperature19°C
- Good:Wind
- Wind light19 km/h
Limiting factor:none
Thursday 10 September: Not worth it. No — ground frozen.
Thursday 10 SeptemberLow confidence this far out
No — ground frozen.
- Good:Grass wetness
- Grass dryno rain since Tuesday
- Good:Ground firmness
- Ground firm42mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.91
- Good:Temperature
- Temperature16°C
- Good:Wind
- Wind light21 km/h
Limiting factor:none
Nearby
Your own postcode
These are town-centre figures. Yours will differ a little.