Riverside, IL
Climate overview — based on NOAA 1991-2020 normals from CHICAGO MIDWAY AP, IL US.
Year-round temperatures (°F)
Climate summary
Riverside has an annual average temperature of 52.1°F with about 34.4 inches of precipitation per year. The warmest month is July (average high 85.0°F), and the coldest is January (average low 19.4°F). May is typically the wettest month (4.09 in) and February the driest (1.46 in).
Best time to visit Riverside
Full guide →Climate change signal
All-time records →160 of 366 (43.7%) 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.
| 1990s | 34 | |
| 2000s | 110 | |
| 2010s | 123 | |
| 2020s | 99 |
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 | 32.7°F | 19.4°F | 26.0°F | 1.48 in | — | 8 |
| February | 36.8°F | 22.6°F | 29.7°F | 1.46 in | — | 8 |
| March | 47.6°F | 31.7°F | 39.6°F | 1.88 in | — | 10 |
| April | 59.9°F | 41.4°F | 50.6°F | 3.57 in | — | 12 |
| May | 71.1°F | 52.0°F | 61.5°F | 4.09 in | — | 13 |
| June | 80.9°F | 62.3°F | 71.6°F | 4.01 in | — | 12 |
| July | 85.0°F | 67.7°F | 76.3°F | 3.55 in | — | 10 |
| August | 82.7°F | 66.4°F | 74.5°F | 3.99 in | — | 10 |
| September | 76.3°F | 58.8°F | 67.5°F | 2.77 in | — | 9 |
| October | 63.4°F | 46.5°F | 54.9°F | 3.48 in | — | 12 |
| November | 49.1°F | 35.0°F | 42.0°F | 2.35 in | — | 9 |
| December | 37.6°F | 25.0°F | 31.3°F | 1.79 in | — | 10 |
Climate twins of Riverside
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).