Cornelius, OR Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Cornelius, a city in Washington County, Oregon.
Today
94°F
Areas Of Smoke
Areas of smoke. Sunny, with a high near 94. North northeast wind around 8 mph.
7-day forecast for Cornelius
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 94°F | Areas Of Smoke | 8 mph NNE | 0% |
| Tonight | 62°F | Smoke | 5 to 8 mph NNW | 0% |
| Wednesday | 98°F | Areas Of Smoke | 5 mph N | 0% |
| Wednesday Night | 62°F | Clear | 0 to 5 mph NNW | 0% |
| Thursday | 98°F | Sunny | 2 mph N | 0% |
| Thursday Night | 60°F | Clear | 0 to 6 mph NNW | 0% |
| Friday | 93°F | Sunny | 0 to 8 mph N | 0% |
| Friday Night | 58°F | Clear | 1 to 8 mph NNW | 0% |
| Saturday | 87°F | Sunny | 1 to 10 mph NNW | 0% |
| Saturday Night | 54°F | Mostly Clear | 1 to 10 mph NNW | 0% |
| Sunday | 81°F | Sunny | 1 to 9 mph NNW | 0% |
| Sunday Night | 53°F | Mostly Clear | 0 to 9 mph NNW | 0% |
| Monday | 81°F | Sunny | 0 to 8 mph N | 0% |
| Monday Night | 53°F | Mostly Clear | 0 to 8 mph NNW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Cornelius (45.519, -123.051). Updated through the day.
Growing snapshot for Cornelius
Last spring frost
Apr 16
First fall frost
Oct 26
Growing season
192 days
Hardiness zone
8b
More local growing data for Cornelius: nearby ZIP 97113 weather · frost dates · planting calendar · Oregon frost dates
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Climate data from the nearest NOAA station, Forest Grove, Or (3.1 mi from Cornelius). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.