Weather & Climate
Riverside County, California, United States
Overview
Available climate summaries for Riverside County. Origins and reference periods are unverified; stored values may include AI estimates. Treat these as estimates until independently verified.
Key Metrics
Annual Avg
20.7°C
Summer Avg
30.6°C
Winter Avg
11.5°C
Record High
47.7°C
Record Low
-3.3°C
Annual Precipitation
188.1 mm
Avg Humidity
38%
Summer Humidity
27%
Winter Humidity
48%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 28.8° | 11.3° | -3.3° | 32.9 | 48% | 107 | 42.9 |
| Feb | 32.4° | 12.4° | -2.4° | 38.6 | 48% | 126 | 40.1 |
| Mar | 34.2° | 15.5° | 0.8° | 18.6 | 46% | 184 | 42.7 |
| Apr | 37.7° | 18.2° | 2.9° | 11.1 | 42% | 218 | 41.2 |
| May | 43° | 22.7° | 5.3° | 4 | 36% | 253 | 37.8 |
| Jun | 47.1° | 28.3° | 8.9° | 0.3 | 27% | 255 | 38.9 |
| Jul | 47.7° | 32° | 15° | 6.5 | 27% | 242 | 34.3 |
| Aug | 46.1° | 31.6° | 13.4° | 7.1 | 27% | 225 | 30.6 |
| Sep | 46.1° | 28.2° | 8.7° | 6.3 | 30% | 189 | 33.3 |
| Oct | 40.2° | 21.9° | 4.7° | 12.4 | 34% | 157 | 38.5 |
| Nov | 33.3° | 15.9° | -1.1° | 16.2 | 39% | 113 | 40.4 |
| Dec | 27.6° | 10.8° | -2.1° | 34.1 | 48% | 96 | 37.7 |
Data sources
Estimates and unverified origins
Oyster List climate data - Climate origins are unverified. Available methods include historical APIs and AI estimates; stored rows do not identify the original dataset, reference period, or model for each value. Treat these summaries as estimates until independently verified. Record updated 2026-03-22.