Forest Grove, OR Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Forest Grove, a city in Washington County, Oregon.
Today
62°F
Mostly Cloudy
Mostly cloudy. High near 62, with temperatures falling to around 57 in the afternoon. North northeast wind around 1 mph.
7-day forecast for Forest Grove
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 62°F | Mostly Cloudy | 1 mph NNE | 12% |
| Tonight | 37°F | Mostly Clear then Areas Of Fog | 0 mph | 5% |
| Wednesday | 56°F | Areas Of Fog then Light Rain Likely | 2 mph SSE | 71% |
| Wednesday Night | 44°F | Light Rain then Areas Of Fog | 2 mph SSW | 96% |
| Thursday | 58°F | Areas Of Fog then Partly Sunny | 2 mph N | 6% |
| Thursday Night | 44°F | Patchy Fog | 0 mph | 62% |
| Friday | 58°F | Light Rain Likely | 2 mph SSE | 62% |
| Friday Night | 45°F | Slight Chance Light Rain then Areas Of Fog | 0 mph | 20% |
| Saturday | 62°F | Areas Of Fog then Slight Chance Light Rain | 1 mph SSE | 24% |
| Saturday Night | 48°F | Light Rain Likely | 1 to 12 mph S | 66% |
| Sunday | 59°F | Light Rain Likely | 0 to 6 mph SW | 59% |
| Sunday Night | 42°F | Areas Of Fog | 0 mph | 18% |
| Monday | 58°F | Areas Of Fog then Chance Light Rain | 1 mph SSE | 46% |
| Monday Night | 45°F | Light Rain Likely | 2 mph S | 57% |
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
8b
More local growing data for Forest Grove: 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 Forest Grove). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.