Walla Walla, WA
Climate overview — based on NOAA 1991-2020 normals from WALLA WALLA RGNL AP, WA US.
Year-round temperatures (°F)
Climate summary
Walla Walla has an annual average temperature of 54.3°F with about 18.7 inches of precipitation per year and 6.5 inches of snow. The warmest month is July (average high 90.1°F), and the coldest is December (average low 30.2°F). November is typically the wettest month (2.25 in) and August the driest (0.40 in). Snow typically falls from November through March.
Best time to visit Walla Walla
Full guide →Climate change signal
All-time records →54 of 366 (14.8%) of Walla Walla'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.
| 1940s | 5 | |
| 1950s | 45 | |
| 1960s | 48 | |
| 1970s | 59 | |
| 1980s | 60 | |
| 1990s | 43 | |
| 2000s | 36 | |
| 2010s | 37 | |
| 2020s | 33 |
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 | 41.9°F | 30.7°F | 36.3°F | 2.10 in | 1.0 in | 13 |
| February | 46.5°F | 32.9°F | 39.7°F | 1.59 in | 2.2 in | 11 |
| March | 55.8°F | 37.8°F | 46.8°F | 2.11 in | 0.2 in | 12 |
| April | 62.5°F | 42.5°F | 52.5°F | 1.98 in | — | 11 |
| May | 71.4°F | 49.3°F | 60.4°F | 2.07 in | — | 10 |
| June | 79.0°F | 55.1°F | 67.0°F | 1.24 in | — | 7 |
| July | 90.1°F | 62.4°F | 76.3°F | 0.47 in | — | 3 |
| August | 88.6°F | 61.7°F | 75.2°F | 0.40 in | — | 3 |
| September | 78.5°F | 53.9°F | 66.2°F | 0.64 in | — | 4 |
| October | 63.4°F | 43.9°F | 53.7°F | 1.66 in | 0.1 in | 9 |
| November | 49.2°F | 35.6°F | 42.4°F | 2.25 in | 0.3 in | 13 |
| December | 41.0°F | 30.2°F | 35.6°F | 2.23 in | 2.7 in | 14 |
Climate twins of Walla Walla
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).