Forest Grove, OR
Climate overview — based on NOAA 1991-2020 normals from FOREST GROVE, OR US.
Year-round temperatures (°F)
Climate summary
Forest Grove has an annual average temperature of 52.1°F with about 46.7 inches of precipitation per year and 2.7 inches of snow. The warmest month is August (average high 82.2°F), and the coldest is January (average low 32.6°F). December is typically the wettest month (8.72 in) and July the driest (0.32 in). Snow typically falls from October through February.
Best time to visit Forest Grove
Full guide →Climate change signal
All-time records →42 of 366 (11.5%) of Forest Grove's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.
| 1890s | 13 | |
| 1900s | 36 | |
| 1910s | 14 | |
| 1920s | 13 | |
| 1930s | 25 | |
| 1940s | 12 | |
| 1950s | 25 | |
| 1960s | 36 | |
| 1970s | 28 | |
| 1980s | 31 | |
| 1990s | 50 | |
| 2000s | 36 | |
| 2010s | 24 | |
| 2020s | 23 |
Bars: number of all-time daily heat records still standing that were set in each decade.
Monthly averages
| Month | Avg High | Avg Low | Avg Temp | Precipitation | Snow | Rainy days |
|---|---|---|---|---|---|---|
| January | 45.0°F | 32.6°F | 38.8°F | 7.19 in | 0.6 in | 19 |
| February | 49.4°F | 33.1°F | 41.2°F | 5.76 in | 0.6 in | 15 |
| March | 54.6°F | 35.9°F | 45.2°F | 5.03 in | — | 17 |
| April | 60.1°F | 39.2°F | 49.6°F | 3.33 in | — | 16 |
| May | 68.1°F | 45.3°F | 56.7°F | 2.19 in | — | 11 |
| June | 73.1°F | 49.7°F | 61.4°F | 1.40 in | — | 8 |
| July | 81.4°F | 53.8°F | 67.6°F | 0.32 in | — | 2 |
| August | 82.2°F | 53.5°F | 67.9°F | 0.51 in | — | 3 |
| September | 76.1°F | 48.7°F | 62.4°F | 1.34 in | — | 5 |
| October | 63.3°F | 41.6°F | 52.4°F | 3.70 in | 0.2 in | 11 |
| November | 50.9°F | 36.3°F | 43.6°F | 7.23 in | — | 19 |
| December | 44.0°F | 32.8°F | 38.4°F | 8.72 in | 1.3 in | 19 |
Climate twins of Forest Grove
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).