Harman US

North Plains, OR Weather & Growing Conditions

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

Overnight
50°F
Areas Of Fog
Areas of fog. Partly cloudy, with a low around 50. Wind around 0 mph.

7-day forecast for North Plains

WhenTempForecastWindPrecip
Overnight 50°F Areas Of Fog 0 mph 0%
Saturday 81°F Areas Of Fog then Mostly Sunny 2 mph N 0%
Saturday Night 51°F Mostly Clear then Patchy Fog 2 mph NNW 0%
Sunday 83°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 50°F Partly Cloudy 0 to 7 mph NNW 0%
Tuesday 74°F Mostly Sunny 0 to 6 mph NNW 0%
Tuesday Night 48°F Partly Cloudy 0 to 6 mph NNW 0%
Wednesday 73°F Patchy Fog then Partly Sunny 2 mph N 0%
Wednesday Night 49°F Mostly Cloudy 2 mph NNW 2%
Thursday 71°F Partly Sunny 1 to 6 mph NNW 11%
Thursday Night 49°F Mostly Cloudy 2 to 6 mph NNW 11%
Friday 69°F Mostly Sunny 1 to 6 mph NNW 9%

Forecast source: National Weather Service (api.weather.gov) for North Plains (45.597, -122.995). Updated through the day.

Growing snapshot for North Plains

Last spring frost
Apr 16
First fall frost
Oct 23
Growing season
191 days
Hardiness zone
8b

More local growing data for North Plains: nearby ZIP 97124 weather · frost dates · planting calendar · Oregon frost dates

Nearby towns & communities

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Climate data from the nearest NOAA station, Portland-Hillsboro Ap, Or (2 mi from North Plains). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.