Forest Grove, OR Weather & Growing Conditions
This Afternoon
79°F
Mostly Sunny
Mostly sunny, with a high near 79. North wind around 1 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 79°F | Mostly Sunny | 1 mph N | 0% |
| Tonight | 52°F | Clear | 2 mph NW | 0% |
| Sunday | 82°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 6 mph NNW | 0% |
| Monday Night | 51°F | Partly Cloudy | 1 to 6 mph NW | 0% |
| Tuesday | 73°F | Mostly Sunny | 1 to 6 mph NNW | 0% |
| Tuesday Night | 49°F | Partly Cloudy | 0 to 6 mph NNW | 1% |
| Wednesday | 71°F | Partly Sunny | 1 mph NNW | 1% |
| Wednesday Night | 50°F | Mostly Cloudy | 2 mph NW | 3% |
| Thursday | 68°F | Partly Sunny | 1 to 5 mph NNW | 7% |
| Thursday Night | 50°F | Mostly Cloudy | 5 mph NNW | 14% |
| Friday | 66°F | Slight Chance Light Rain | 2 to 6 mph NNW | 16% |
| Friday Night | 48°F | Partly Cloudy | 2 to 6 mph NW | 9% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Forest Grove, OR
Last spring frost
Apr 16
First fall frost
Oct 26
Growing season
192 days
Hardiness zone
8b
Explore more for Forest Grove, OR: full frost dates · planting calendar · Oregon frost dates
Climate data from the nearest NOAA station, Forest Grove, Or (4.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.