Forest Grove, OR Weather & Climate Normals
Forest Grove's real weather, in one number
Forest Grove, OR scores 55/100 on this site's reading of NOAA's own 30-year normals: strongly seasonal. Comfortable weather is limited to a shorter window; summers, winters, or precipitation swing wide. 5 of the year's 12 months average between 55 and 75°F, the range this site counts as mild.
Forest Grove's hottest and coldest months
Forest Grove's hottest month is Aug, averaging 68°F; its coldest is Dec, averaging 38°F, a 29.5°F swing across the year, a middling gap by national standards.
Forest Grove's weather across the year
| Month | Avg high | Avg low | Precip | Snow |
|---|---|---|---|---|
| Jan | 45°F | 33°F | 7.19in | 0.6in |
| Feb | 49°F | 33°F | 5.76in | 0.6in |
| Mar | 55°F | 36°F | 5.03in | 0in |
| Apr | 60°F | 39°F | 3.33in | 0in |
| May | 68°F | 45°F | 2.19in | 0in |
| Jun | 73°F | 50°F | 1.4in | 0in |
| Jul | 81°F | 54°F | 0.32in | 0in |
| Aug | 82°F | 54°F | 0.51in | 0in |
| Sep | 76°F | 49°F | 1.34in | 0in |
| Oct | 63°F | 42°F | 3.7in | 0.2in |
| Nov | 51°F | 36°F | 7.23in | 0in |
| Dec | 44°F | 33°F | 8.72in | 1.3in |
May, Jun, Jul, Aug, and Sep are the best time to see Forest Grove at its mildest; the rest of the year, plan around Dec's cold.
Rain and snow in Forest Grove
Forest Grove averages 46.72in of precipitation a year across roughly 146 days with measurable rain or snow, and 2.7in of snow a year.
Where Forest Grove ranks
Forest Grove ranks 838 of 4876 US cities in this dataset for comfort score, and 40 of 80 within OR. About 27,076 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from Forest Grove, OR US, 0.4 miles from Forest Grove, not a prediction for any specific day.
More on how this is worked out
What a 30-year climate normal actually is · Why this uses the nearest NOAA station