Cottage Grove, OR Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Cottage Grove, a city in Lane County, Oregon.
Overnight
54°F
Areas Of Smoke
Areas of smoke. Mostly clear. Low around 54, with temperatures rising to around 56 overnight. North wind around 2 mph.
7-day forecast for Cottage Grove
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 54°F | Areas Of Smoke | 2 mph N | 0% |
| Tuesday | 97°F | Areas Of Smoke | 1 to 6 mph N | 0% |
| Tuesday Night | 61°F | Areas Of Smoke | 0 to 6 mph NNW | 0% |
| Wednesday | 101°F | Areas Of Smoke | 0 to 3 mph NW | 0% |
| Wednesday Night | 61°F | Clear | 0 to 3 mph WSW | 0% |
| Thursday | 100°F | Sunny | 0 to 3 mph NW | 0% |
| Thursday Night | 58°F | Clear | 0 to 3 mph W | 0% |
| Friday | 95°F | Sunny | 0 to 6 mph NNW | 0% |
| Friday Night | 59°F | Clear | 1 to 6 mph N | 0% |
| Saturday | 91°F | Sunny | 1 to 7 mph N | 0% |
| Saturday Night | 55°F | Mostly Clear | 1 to 7 mph NNW | 0% |
| Sunday | 86°F | Sunny | 1 to 8 mph N | 0% |
| Sunday Night | 52°F | Mostly Clear | 2 to 8 mph N | 0% |
| Monday | 85°F | Sunny | 2 to 7 mph N | 0% |
Forecast source: National Weather Service (api.weather.gov) for Cottage Grove (43.796, -123.057). Updated through the day.
Growing snapshot for Cottage Grove
Last spring frost
Apr 12
First fall frost
Nov 1
Growing season
205 days
Hardiness zone
8b
More local growing data for Cottage Grove: nearby ZIP 97424 weather · frost dates · planting calendar · Oregon frost dates
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Climate data from the nearest NOAA station, Cottage Grove Dam, Or (2 mi from Cottage Grove). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.