What is the soil temperature in Bangor, Maine?

Soil temperature at 6cm in Bangor, Maine is currently 18.9°C. Seeding conditions are open — soil is 18.9°C at 6cm and holding above 12.5°C.

Soil temperature in Bangor, Maine

Soil temperature

66°F18.9°C

at 6cm — germination depth

Cooling over the next 11 days.

Seeding conditions are open — soil is 18.9°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.

Soil temperature at 6cm for reliable germination. Sources onthe method page.
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 Bangor, Maine is currently 18.9°C, and falling about 16.0°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. Seeding conditions are open — soil is 18.9°C at 6cm and holding above 12.5°C.

7 of the next 10 days are good mowing days. The other 3 are held back by wet grass or soft ground. The best weekend slot right now is Sunday 10am–8pm, on the basis that rain earlier today, ground firm.

The next recommended window in Bangor opens at 8am on Wednesday 2 September, because anything earlier is the hour your neighbours will remember. Underfoot, the ground reads as firm after 3mm rain over the last week.

See the full mowing forecast for Bangor

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 17.4°C cooling to 0.0°C

Tuesday 1 SeptemberConfident

No — nothing quite good enough today.

Good:Grass wetness: Grass dryno rain since Sunday
Good:Ground firmness: Ground firm3mm rain over the last week
Good:Growth: Growing wellgrowth potential 0.86
Good:Temperature: Temperature19°C
Good:Wind: Wind light8 km/h

Limiting factor:none

Wednesday 2 September · 8am–8pmConfident

8am–8pm — no rain since Sunday, ground firm

Good:Grass wetness: Grass dryno rain since Sunday
Good:Ground firmness: Ground firm3mm rain over the last week
Good:Growth: Growing wellgrowth potential 0.93
Good:Temperature: Temperature12°C
Good:Wind: Wind light8 km/h
Sociable hours: A bit early or late, but finestarts when it stops being antisocial

Limiting factor:none

Thursday 3 SeptemberConfident

No — 1.8mm of rain falling.

Poor:Grass wetness: Grass wetraining now
Good:Ground firmness: Ground firm3mm rain over the last week
Good:Growth: Growing wellgrowth potential 0.73
Good:Temperature: Temperature15°C
Good:Wind: Wind light13 km/h

Limiting factor:grass wetness

Friday 4 September · 6pm–8pmConfident

6pm–8pm — dried off since a shower 1 hour ago, ground firm

Poor:Grass wetness: Grass drydried off since a shower 1 hour ago
Good:Ground firmness: Ground firm19mm rain over the last week
Good:Growth: Growing wellgrowth potential 0.91
Good:Temperature: Temperature15°C
Good:Wind: Wind light3 km/h
Sociable hours: A bit early or late, but finestarts once the rain has passed

Limiting factor:none

Saturday 5 September · 10am–11amReasonably confident

10am–11am — rain 1 hour ago, ground firm

Good:Grass wetness: Grass drydried off since a shower 3 hours ago
Good:Ground firmness: Ground firm22mm rain over the last week
Good:Growth: Growing wellgrowth potential 0.57
Good:Temperature: Temperature15°C
Good:Wind: Wind light14 km/h
Sociable hours: Fine by the neighboursstarts once the rain has passed

Limiting factor:none

Sunday 6 September · 10am–8pmReasonably confident

10am–8pm — rain earlier today, ground firm

Good:Grass wetness: Grass dryrain earlier today
Good:Ground firmness: Ground firm21mm rain over the last week
Good:Growth: Growing wellgrowth potential 0.75
Good:Temperature: Temperature13°C
Good:Wind: Wind light21 km/h
Sociable hours: Fine by the neighboursstarts when it stops being antisocial

Limiting factor:none

Monday 7 September · 10am–8pmReasonably confident

10am–8pm — no rain since Saturday, ground firm

Good:Grass wetness: Grass dryno rain since Saturday
Good:Ground firmness: Ground firm21mm rain over the last week
Good:Growth: Growing wellgrowth potential 0.58
Good:Temperature: Temperature12°C
Good:Wind: Wind light8 km/h
Sociable hours: Fine by the neighboursstarts when it stops being antisocial

Limiting factor:none

Tuesday 8 September · 8am–7pmReasonably confident

8am–7pm — no rain since Saturday, ground firm

Good:Grass wetness: Grass dryno rain since Saturday
Good:Ground firmness: Ground firm20mm rain over the last week
Good:Growth: Growing wellgrowth potential 0.71
Good:Temperature: Temperature13°C
Good:Wind: Wind light3 km/h
Sociable hours: A bit early or late, but finestarts when it stops being antisocial

Limiting factor:none

Wednesday 9 SeptemberLow confidence this far out

No — ground frozen.

Good:Grass wetness: Grass dryno rain since Saturday
Good:Ground firmness: Ground firm20mm rain over the last week
Marginal:Growth: Growing slowlygrowth potential 0.28
Good:Temperature: Temperature10°C
Good:Wind: Wind light2 km/h

Limiting factor:grass wetness

Thursday 10 SeptemberLow confidence this far out

No — ground frozen.

Poor:Grass wetness: Grass wetraining now
Good:Ground firmness: Ground firm20mm rain over the last week
Poor:Growth: Growing slowlygrowth potential 0.21
Good:Temperature: Temperature11°C
Good:Wind: Wind light12 km/h

Limiting factor:grass wetness

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