Zillah, WA
Climate overview — based on NOAA 1991-2020 normals from WAPATO, WA US.
Year-round temperatures (°F)
Climate summary
Zillah has an annual average temperature of 52.3°F with about 7.8 inches of precipitation per year and 20.4 inches of snow. The warmest month is July (average high 90.2°F), and the coldest is December (average low 23.3°F). December is typically the wettest month (1.36 in) and August the driest (0.23 in). Snow typically falls from October through March.
Best time to visit Zillah
Full guide →Climate change signal
All-time records →0 of 366 (0%) of Zillah'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.
| 1910s | 18 | |
| 1920s | 47 | |
| 1930s | 62 | |
| 1940s | 43 | |
| 1950s | 18 | |
| 1960s | 29 | |
| 1970s | 66 | |
| 1980s | 28 | |
| 1990s | 26 | |
| 2000s | 28 | |
| 2010s | 1 |
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 | 39.3°F | 24.4°F | 31.8°F | 1.10 in | 5.2 in | 9 |
| February | 47.5°F | 26.3°F | 36.9°F | 0.61 in | 1.1 in | 6 |
| March | 56.9°F | 32.6°F | 44.8°F | 0.56 in | 0.3 in | 6 |
| April | 65.2°F | 38.7°F | 52.0°F | 0.56 in | — | 5 |
| May | 74.5°F | 46.6°F | 60.5°F | 0.83 in | — | 6 |
| June | 81.2°F | 53.3°F | 67.2°F | 0.54 in | — | 5 |
| July | 90.2°F | 59.2°F | 74.7°F | 0.24 in | — | 3 |
| August | 88.8°F | 57.7°F | 73.2°F | 0.23 in | — | 2 |
| September | 80.3°F | 48.8°F | 64.5°F | 0.23 in | — | 3 |
| October | 65.9°F | 37.3°F | 51.6°F | 0.64 in | 0.2 in | 6 |
| November | 49.5°F | 28.7°F | 39.1°F | 0.92 in | 1.6 in | 8 |
| December | 38.5°F | 23.3°F | 30.9°F | 1.36 in | 12.0 in | 10 |
Climate twins of Zillah
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).