Cornelius, OR Weather & Growing Conditions
Tonight
50°F
Partly Cloudy then Patchy Fog
Patchy fog after 2am. Partly cloudy. Low around 50, with temperatures rising to around 52 overnight. North northwest wind around 2 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 50°F | Partly Cloudy then Patchy Fog | 2 mph NNW | 0% |
| Saturday | 80°F | Areas Of Fog then Mostly Sunny | 2 mph N | 0% |
| Saturday Night | 51°F | Partly Cloudy | 3 mph NNW | 0% |
| Sunday | 84°F | Patchy Fog then Sunny | 1 to 6 mph NNW | 0% |
| Sunday Night | 52°F | Mostly Clear | 1 to 6 mph NNW | 0% |
| Monday | 77°F | Mostly Sunny | 0 to 7 mph NNW | 0% |
| Monday Night | 51°F | Partly Cloudy | 1 to 7 mph NNW | 0% |
| Tuesday | 74°F | Mostly Sunny | 0 to 6 mph NNW | 0% |
| Tuesday Night | 49°F | Partly Cloudy | 0 to 6 mph NNW | 0% |
| Wednesday | 73°F | Mostly Sunny | 2 mph N | 0% |
| Wednesday Night | 51°F | Partly Cloudy | 2 mph NNW | 2% |
| Thursday | 76°F | Mostly Sunny | 2 mph NNW | 6% |
| Thursday Night | 52°F | Slight Chance Light Rain | 2 mph NNW | 21% |
| Friday | 69°F | Mostly Sunny | 0 to 6 mph WNW | 13% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Cornelius, OR
Last spring frost
Apr 16
First fall frost
Oct 26
Growing season
192 days
Hardiness zone
8b
Explore more for Cornelius, OR: full frost dates · planting calendar · Oregon frost dates
Climate data from the nearest NOAA station, Forest Grove, Or (3.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.