Forest Grove, OR Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Forest Grove, a city in Washington County, Oregon.

Tonight

51°F

Mostly Clear then Patchy Fog

Patchy fog between 4am and 5am. Mostly clear, with a low around 51. North northwest wind around 2 mph.

7-day forecast for Forest Grove

When	Temp	Forecast	Wind	Precip
Tonight	51°F	Mostly Clear then Patchy Fog	2 mph NNW	0%
Saturday	80°F	Patchy Fog then Mostly Sunny	2 mph N	0%
Saturday Night	52°F	Partly Cloudy	3 mph NNW	0%
Sunday	83°F	Sunny	1 to 5 mph NNW	0%
Sunday Night	53°F	Mostly Clear	1 to 5 mph NNW	0%
Monday	77°F	Mostly Sunny	1 to 7 mph NNW	0%
Monday Night	52°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	1 mph N	1%
Wednesday Night	51°F	Partly Cloudy	1 mph N	2%
Thursday	76°F	Mostly Sunny	1 mph NNW	7%
Thursday Night	52°F	Slight Chance Light Rain	1 mph NW	21%
Friday	69°F	Mostly Sunny	1 to 6 mph W	13%

Forecast source: National Weather Service (api.weather.gov) for Forest Grove (45.525, -123.110). Updated through the day.

Growing snapshot for Forest Grove

Last spring frost

Apr 16

First fall frost

Oct 26

Growing season

192 days

Hardiness zone

More local growing data for Forest Grove: nearby ZIP 97113 weather · frost dates · planting calendar · Oregon frost dates

Nearby towns & communities

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Climate data from the nearest NOAA station, Forest Grove, Or (3.1 mi from Forest Grove). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.