Cottage Grove, OR Weather & Growing Conditions
This Afternoon
77°F
Sunny
Sunny. High near 77, with temperatures falling to around 75 in the afternoon. North northwest wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 77°F | Sunny | 3 mph NNW | 0% |
| Tonight | 48°F | Partly Cloudy | 2 mph NW | 0% |
| Sunday | 78°F | Mostly Sunny | 0 to 3 mph NNW | 0% |
| Sunday Night | 50°F | Partly Cloudy then Patchy Fog | 2 mph W | 0% |
| Monday | 75°F | Patchy Fog then Mostly Sunny | 0 to 5 mph NNW | 0% |
| Monday Night | 49°F | Partly Cloudy then Patchy Fog | 3 mph N | 0% |
| Tuesday | 71°F | Patchy Fog then Mostly Sunny | 1 to 5 mph N | 0% |
| Tuesday Night | 45°F | Partly Cloudy then Patchy Fog | 0 to 3 mph N | 0% |
| Wednesday | 71°F | Patchy Fog then Mostly Sunny | 0 to 3 mph NNW | 0% |
| Wednesday Night | 46°F | Partly Cloudy | 0 to 3 mph NNE | 0% |
| Thursday | 69°F | Mostly Sunny | 1 to 5 mph N | 2% |
| Thursday Night | 46°F | Mostly Cloudy then Slight Chance Light Rain | 3 mph N | 21% |
| Friday | 66°F | Slight Chance Light Rain | 1 to 5 mph N | 21% |
| Friday Night | 43°F | Partly Cloudy | 1 to 5 mph NNE | 13% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Cottage Grove, OR
Last spring frost
Apr 12
First fall frost
Nov 1
Growing season
205 days
Hardiness zone
8b
Explore more for Cottage Grove, OR: full frost dates · planting calendar · Oregon frost dates
Climate data from the nearest NOAA station, Cottage Grove Dam, Or (2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.