Harman US

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

WhenTempForecastWindPrecip
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.