Chehalis, WA
Climate overview — based on NOAA 1991-2020 normals from CENTRALIA, WA US.
Year-round temperatures (°F)
Climate summary
Chehalis has an annual average temperature of 51.5°F with about 41.6 inches of precipitation per year. The warmest month is August (average high 78.2°F), and the coldest is February (average low 33.9°F). November is typically the wettest month (6.53 in) and July the driest (0.50 in).
Best time to visit Chehalis
Full guide →Climate change signal
All-time records →13 of 366 (3.6%) of Chehalis'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 | 0 | |
| 1900s | 26 | |
| 1910s | 38 | |
| 1920s | 33 | |
| 1930s | 63 | |
| 1940s | 59 | |
| 1950s | 23 | |
| 1960s | 22 | |
| 1970s | 11 | |
| 1980s | 26 | |
| 1990s | 28 | |
| 2000s | 22 | |
| 2010s | 9 | |
| 2020s | 6 |
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 | 46.1°F | 34.2°F | 40.2°F | 5.85 in | — | 22 |
| February | 49.5°F | 33.9°F | 41.7°F | 4.24 in | — | 18 |
| March | 54.1°F | 35.9°F | 45.0°F | 4.39 in | — | 20 |
| April | 59.5°F | 39.1°F | 49.3°F | 3.24 in | — | 17 |
| May | 66.6°F | 44.4°F | 55.5°F | 2.44 in | — | 12 |
| June | 71.1°F | 49.1°F | 60.1°F | 1.53 in | — | 9 |
| July | 77.5°F | 52.9°F | 65.2°F | 0.50 in | — | 4 |
| August | 78.2°F | 52.8°F | 65.5°F | 0.84 in | — | 5 |
| September | 72.6°F | 48.4°F | 60.5°F | 1.59 in | — | 8 |
| October | 61.1°F | 42.7°F | 51.9°F | 4.00 in | — | 16 |
| November | 50.7°F | 37.1°F | 43.9°F | 6.53 in | — | 21 |
| December | 45.0°F | 33.9°F | 39.4°F | 6.44 in | — | 22 |
Climate twins of Chehalis
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).