Soil temperature in Fredericton, New Brunswick
Soil temperature
16.8°C62°F
at 6cm — germination depth
Cooling over the next 11 days.
Seeding conditions are open — soil is 16.8°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 |
Soil temperature at 6cm in Fredericton, New Brunswick is currently 16.8°C, and falling about 15.7°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 16.8°C at 6cm and holding above 12.5°C.
7 of the next 10 days are good mowing days. The best weekend slot right now is Sunday 11am–8pm, on the basis that dried off since a shower 1 hour ago, ground firm.
The next recommended window in Fredericton 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.
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 16.5°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 since Sunday
- Good:Ground firmness
- Ground firm3mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.80
- Good:Temperature
- Temperature16°C
- Good:Wind
- Wind light4 km/h
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 firm3mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.77
- Good:Temperature
- Temperature11°C
- Good:Wind
- Wind light4 km/h
- Sociable hours
- A bit early or late, but finestarts when it stops being antisocial
Limiting factor:none
Thursday 3 September: Good. 8am–midday — no rain since Sunday, ground firm
Thursday 3 September · 8am–middayConfident
8am–midday — no rain since Sunday, ground firm
- Poor:Grass wetness
- Grass dryno rain since Sunday
- Good:Ground firmness
- Ground firm3mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.63
- 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
Friday 4 September: Good. 1pm–8pm — rain earlier today, ground firm
Friday 4 September · 1pm–8pmConfident
1pm–8pm — rain earlier today, ground firm
- Marginal:Grass wetness
- Grass dryrain earlier today
- Good:Ground firmness
- Ground firm11mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.90
- Good:Temperature
- Temperature15°C
- Good:Wind
- Wind light7 km/h
- Sociable hours
- Fine by the neighboursstarts once the dew has burnt off
Limiting factor:none
Saturday 5 September: Good. 2pm–8pm — dried off since a shower 4 hours ago, ground firm
Saturday 5 September · 2pm–8pmReasonably confident
2pm–8pm — dried off since a shower 4 hours ago, ground firm
- Marginal:Grass wetness
- Grass drydried off since a shower 4 hours ago
- Good:Ground firmness
- Ground firm21mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.53
- Good:Temperature
- Temperature13°C
- Good:Wind
- Wind light24 km/h
- Sociable hours
- Fine by the neighboursstarts once the dew has burnt off
Limiting factor:none
Sunday 6 September: Good. 11am–8pm — dried off since a shower 1 hour ago, ground firm
Sunday 6 September · 11am–8pmReasonably confident
11am–8pm — dried off since a shower 1 hour ago, ground firm
- Good:Grass wetness
- Grass dryrain earlier today
- Good:Ground firmness
- Ground firm23mm rain over the last week
- Good:Growth
- Growing steadilygrowth potential 0.41
- Good:Temperature
- Temperature12°C
- Good:Wind
- Wind light22 km/h
- Sociable hours
- Fine by the neighboursstarts once the rain has passed
Limiting factor:none
Monday 7 September: Good. 8am–8pm — rain earlier today, ground firm
Monday 7 September · 8am–8pmReasonably confident
8am–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 0.62
- Good:Temperature
- Temperature11°C
- Good:Wind
- Wind light12 km/h
- Sociable hours
- A bit early or late, but finestarts when it stops being antisocial
Limiting factor:none
Tuesday 8 September: Good. 8am–10am — growing slowly — growth potential 0.29
Tuesday 8 September · 8am–10amReasonably confident
8am–10am — growing slowly — growth potential 0.29
- Poor:Grass wetness
- Grass dryno rain since Sunday
- Good:Ground firmness
- Ground firm21mm rain over the last week
- Marginal:Growth
- Growing slowlygrowth potential 0.29
- Good:Temperature
- Temperature11°C
- Good:Wind
- Wind light6 km/h
- Sociable hours
- A bit early or late, but finestarts when it stops being antisocial
Limiting factor:growth
Wednesday 9 September: Not worth it. No — ground frozen.
Wednesday 9 SeptemberLow confidence this far out
No — ground frozen.
- Marginal:Grass wetness
- Grass dryrain earlier today
- Good:Ground firmness
- Ground firm24mm rain over the last week
- Poor:Growth
- Barely growinggrowth potential 0.13
- Good:Temperature
- Temperature11°C
- Good:Wind
- Wind light8 km/h
Limiting factor:grass wetness
Thursday 10 September: Not worth it. No — ground frozen.
Thursday 10 SeptemberLow confidence this far out
No — ground frozen.
- Poor:Grass wetness
- Grass dryraining now
- Good:Ground firmness
- Ground firm24mm rain over the last week
- Poor:Growth
- Barely growinggrowth potential 0.09
- Good:Temperature
- Temperature9°C
- Good:Wind
- Wind light3 km/h
Limiting factor:growth
Nearby
Your own postcode
These are town-centre figures. Yours will differ a little.