# Counties in California by annual precipitation, 2025

All 58 values come from NOAA National Centers for Environmental Information for 2025, so the places are comparable.

- Indicator id: `precipitation_annual`
- Unit: inches
- Definition: Total precipitation from January to December, in inches: rain plus the water content of snow and other frozen precipitation. NOAA computes it from its climate divisional dataset (nClimDiv): station readings interpolated onto a 5 km grid and averaged over the area.
- Source: NOAA National Centers for Environmental Information, NOAA Climate at a Glance, January to December precipitation, counties (https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping)
- Publisher page: https://invokely.ai/en/publishers/noaa-ncei
- Retrieved: 2026-10-12
- Citation: NOAA National Centers for Environmental Information, Climate at a Glance. NOAA Climate at a Glance, January to December precipitation, counties. From the NOAA Monthly U.S. Climate Divisional Database (nClimDiv), doi:10.7289/V5M32STR. https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping. Retrieved 2026-10-12.
- Web page: https://invokely.ai/rankings/annual-precipitation/california-counties

| Rank | Place | inches |
|---:|---|---:|
| 1 | Humboldt County | 67.99 |
| 2 | Del Norte County | 67.03 |
| 3 | Trinity County | 60.48 |
| 4 | Nevada County | 53.49 |
| 5 | Mendocino County | 51.37 |
| 6 | Placer County | 48.64 |
| 7 | Sierra County | 47.98 |
| 8 | El Dorado County | 46.54 |
| 9 | Plumas County | 45.79 |
| 10 | Shasta County | 44.12 |
| 11 | Butte County | 43.6 |
| 12 | Lake County | 40.89 |
| 13 | Tuolumne County | 39.11 |
| 14 | Siskiyou County | 38.1 |
| 15 | Alpine County | 36.9 |
| 16 | Sonoma County | 36.58 |
| 17 | Yuba County | 36.57 |
| 18 | Tehama County | 36.5 |
| 19 | Amador County | 35.31 |
| 20 | Mariposa County | 33.76 |
| 21 | Calaveras County | 32.17 |
| 22 | Marin County | 29.43 |
| 23 | Ventura County | 28.33 |
| 24 | Santa Cruz County | 28.31 |
| 25 | Napa County | 25.67 |
| 26 | Madera County | 25.43 |
| 27 | Santa Barbara County | 25.28 |
| 28 | San Mateo County | 23.2 |
| 29 | Glenn County | 22.87 |
| 30 | Lassen County | 22.84 |
| 31 | Tulare County | 22.69 |
| 32 | Fresno County | 21.32 |
| 33 | Santa Clara County | 21.2 |
| 34 | Modoc County | 20.83 |
| 35 | San Francisco County | 20.78 |
| 36 | Los Angeles County | 20.66 |
| 37 | Monterey County | 20.27 |
| 38 | San Luis Obispo County | 18.76 |
| 39 | Colusa County | 18.6 |
| 40 | San Benito County | 17.83 |
| 41 | Yolo County | 17.75 |
| 42 | Mono County | 16.87 |
| 43 | Solano County | 16.61 |
| 43 | Sutter County | 16.61 |
| 45 | Sacramento County | 16.54 |
| 46 | Alameda County | 15.58 |
| 47 | Orange County | 14.95 |
| 48 | Contra Costa County | 14.16 |
| 49 | Stanislaus County | 13.45 |
| 50 | San Joaquin County | 13.26 |
| 51 | San Diego County | 11.8 |
| 52 | Kern County | 11.73 |
| 53 | Merced County | 11.47 |
| 54 | Kings County | 9.04 |
| 55 | Riverside County | 7.99 |
| 56 | San Bernardino County | 7.83 |
| 57 | Inyo County | 7.76 |
| 58 | Imperial County | 3.9 |