Soil temperature in Eugene, Oregon
Soil temperature
68°F19.9°C
at 6cm — germination depth
Cooling over the next 11 days.
Seeding conditions are open — soil is 19.9°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.
| 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 Eugene, Oregon is currently 19.9°C, and falling about 17.7°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 19.9°C at 6cm and holding above 12.5°C.
6 of the next 10 days look workable. The other 4 are held back by wet grass or soft ground. The best weekend slot right now is Sunday 10am–8pm, on the basis that no rain since Friday, ground firm.
The next recommended window in Eugene opens at 5pm on Tuesday 1 September, and holds while conditions stay put. Underfoot, the ground reads as firm after 0mm 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 19.5°C cooling to 0.0°C
Tuesday 1 September: Good. 5pm–8pm — no rain in the record, ground firm
Tuesday 1 September · 5pm–8pmConfident
5pm–8pm — no rain in the record, ground firm
- Good:Grass wetness
- Grass dryno rain in the record
- Good:Ground firmness
- Ground firm0mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.95
- Good:Temperature
- Temperature22°C
- Good:Wind
- Wind light13 km/h
- Sociable hours
- A bit early or late, but fine
Limiting factor:none
Wednesday 2 September: Good. 8am–9am — no rain in the record, ground firm
Wednesday 2 September · 8am–9amConfident
8am–9am — no rain in the record, ground firm
- Poor:Grass wetness
- Grass dryno rain in the record
- Good:Ground firmness
- Ground firm0mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.68
- Good:Temperature
- Temperature14°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 September: Good. 8am–10am — grass slightly damp — rain earlier today
Thursday 3 September · 8am–10amConfident
8am–10am — grass slightly damp — rain earlier today
- Good: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 0.52
- Good:Temperature
- Temperature12°C
- Good:Wind
- Wind light9 km/h
- Sociable hours
- A bit early or late, but finestarts once the dew has burnt off
Limiting factor:grass wetness
Friday 4 September: Not worth it. No — 0.6mm of rain falling.
Friday 4 SeptemberConfident
No — 0.6mm of rain falling.
- Poor:Grass wetness
- Grass wetraining now
- Good:Ground firmness
- Ground firm13mm rain over the last week
- Good:Growth
- Growing steadilygrowth potential 0.38
- Good:Temperature
- Temperature11°C
- Good:Wind
- Wind light4 km/h
Limiting factor:grass wetness
Saturday 5 September: Good. 1pm–8pm — rain earlier today, ground firm
Saturday 5 September · 1pm–8pmReasonably confident
1pm–8pm — rain earlier today, ground firm
- Marginal:Grass wetness
- Grass dryrain earlier today
- Good:Ground firmness
- Ground firm26mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.62
- Good:Temperature
- Temperature10°C
- Good:Wind
- Wind light3 km/h
- Sociable hours
- Fine by the neighboursstarts once the dew has burnt off
Limiting factor:none
Sunday 6 September: Good. 10am–8pm — no rain since Friday, ground firm
Sunday 6 September · 10am–8pmReasonably confident
10am–8pm — no rain since Friday, ground firm
- Good:Grass wetness
- Grass dryno rain since Friday
- Good:Ground firmness
- Ground firm28mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.73
- Good:Temperature
- Temperature12°C
- Good:Wind
- Wind light3 km/h
- Sociable hours
- Fine by the neighboursstarts once the dew has burnt off
Limiting factor:none
Monday 7 September: Marginal. No — 0.1mm of rain falling.
Monday 7 SeptemberReasonably confident
No — 0.1mm of rain falling.
- Poor:Grass wetness
- Grass wetraining now
- Good:Ground firmness
- Ground firm28mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.62
- Good:Temperature
- Temperature13°C
- Good:Wind
- Wind light3 km/h
Limiting factor:grass wetness
Tuesday 8 September: Good. 1pm–6pm — rain earlier today, ground firm
Tuesday 8 September · 1pm–6pmReasonably confident
1pm–6pm — rain earlier today, ground firm
- Marginal:Grass wetness
- Grass dryrain earlier today
- Good:Ground firmness
- Ground firm32mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.70
- Good:Temperature
- Temperature11°C
- Good:Wind
- Wind light1 km/h
- Sociable hours
- Fine by the neighboursstarts once the dew has burnt off
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 Monday
- Good:Ground firmness
- Ground firm32mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.72
- Good:Temperature
- Temperature11°C
- Good:Wind
- Wind light1 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.
- Good:Grass wetness
- Grass dryno rain since Monday
- Good:Ground firmness
- Ground firm21mm rain over the last week
- Good:Growth
- Growing wellgrowth potential 0.94
- Marginal:Temperature
- Temperature12°C
- Good:Wind
- Wind light1 km/h
Limiting factor:grass wetness
Nearby
Your own postcode
These are town-centre figures. Yours will differ a little.