Sonoma, CA
Climate overview — based on NOAA 1991-2020 normals from SONOMA, CA US.
Year-round temperatures (°F)
Climate summary
Sonoma has an annual average temperature of 59°F with about 28.4 inches of precipitation per year. The warmest month is August (average high 86.1°F), and the coldest is December (average low 38.2°F). December is typically the wettest month (5.83 in) and July the driest (0.00 in).
Best time to visit Sonoma
Full guide →Climate change signal
All-time records →21 of 366 (5.7%) of Sonoma'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 | 40 | |
| 1900s | 7 | |
| 1950s | 25 | |
| 1960s | 60 | |
| 1970s | 91 | |
| 1980s | 55 | |
| 1990s | 24 | |
| 2000s | 34 | |
| 2010s | 13 | |
| 2020s | 17 |
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 | 57.0°F | 38.4°F | 47.7°F | 5.47 in | — | 11 |
| February | 61.6°F | 40.1°F | 50.8°F | 5.42 in | — | 11 |
| March | 65.4°F | 41.9°F | 53.7°F | 3.84 in | — | 10 |
| April | 69.2°F | 44.1°F | 56.7°F | 1.78 in | — | 7 |
| May | 75.3°F | 47.8°F | 61.6°F | 1.03 in | — | 4 |
| June | 82.8°F | 51.3°F | 67.1°F | 0.32 in | — | 1 |
| July | 86.0°F | 53.5°F | 69.7°F | 0.00 in | — | 0 |
| August | 86.1°F | 53.2°F | 69.6°F | 0.06 in | — | 0 |
| September | 84.8°F | 51.2°F | 68.0°F | 0.07 in | — | 1 |
| October | 77.5°F | 47.4°F | 62.5°F | 1.52 in | — | 4 |
| November | 65.2°F | 41.8°F | 53.5°F | 3.01 in | — | 8 |
| December | 56.7°F | 38.2°F | 47.4°F | 5.83 in | — | 12 |
Climate twins of Sonoma
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).