Riverside, CA
Climate overview — based on NOAA 1991-2020 normals from RIVERSIDE FIRE STN 3, CA US.
Year-round temperatures (°F)
Climate summary
Riverside has an annual average temperature of 66.9°F with about 10 inches of precipitation per year. The warmest month is August (average high 96.8°F), and the coldest is December (average low 42.1°F). February is typically the wettest month (2.47 in) and June the driest (0.08 in).
Best time to visit Riverside
Full guide →Climate change signal
All-time records →9 of 366 (2.5%) of Riverside'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 | 5 | |
| 1900s | 20 | |
| 1910s | 63 | |
| 1920s | 42 | |
| 1930s | 25 | |
| 1940s | 30 | |
| 1950s | 24 | |
| 1960s | 14 | |
| 1970s | 23 | |
| 1980s | 35 | |
| 1990s | 31 | |
| 2000s | 31 | |
| 2010s | 23 | |
| 2020s | 0 |
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 | 69.8°F | 43.0°F | 56.4°F | 2.19 in | — | 5 |
| February | 69.7°F | 44.1°F | 56.9°F | 2.47 in | — | 6 |
| March | 73.1°F | 46.2°F | 59.6°F | 1.58 in | — | 5 |
| April | 78.2°F | 49.7°F | 63.9°F | 0.58 in | — | 2 |
| May | 81.4°F | 54.7°F | 68.0°F | 0.20 in | — | 2 |
| June | 88.9°F | 59.2°F | 74.1°F | 0.08 in | — | 0 |
| July | 95.3°F | 63.7°F | 79.5°F | 0.12 in | — | 1 |
| August | 96.8°F | 64.5°F | 80.7°F | 0.13 in | — | 0 |
| September | 93.0°F | 61.8°F | 77.4°F | 0.15 in | — | 0 |
| October | 84.3°F | 54.5°F | 69.4°F | 0.44 in | — | 1 |
| November | 76.3°F | 46.5°F | 61.4°F | 0.68 in | — | 2 |
| December | 69.1°F | 42.1°F | 55.6°F | 1.40 in | — | 4 |
Climate twins of Riverside
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).