Rochelle, IL
Climate overview — based on NOAA 1991-2020 normals from ROCHELLE, IL US.
Year-round temperatures (°F)
Climate summary
Rochelle has an annual average temperature of 47.9°F with about 36.6 inches of precipitation per year. The warmest month is July (average high 82.2°F), and the coldest is January (average low 12.1°F). June is typically the wettest month (4.92 in) and February the driest (1.70 in).
Best time to visit Rochelle
Full guide →Climate change signal
All-time records →27 of 366 (7.4%) of Rochelle'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.
| 1970s | 9 | |
| 1980s | 113 | |
| 1990s | 89 | |
| 2000s | 80 | |
| 2010s | 75 |
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 | 28.1°F | 12.1°F | 20.1°F | 1.78 in | — | 9 |
| February | 32.1°F | 15.5°F | 23.8°F | 1.70 in | — | 8 |
| March | 45.1°F | 26.1°F | 35.6°F | 2.27 in | — | 9 |
| April | 58.7°F | 36.6°F | 47.6°F | 3.44 in | — | 11 |
| May | 70.0°F | 48.1°F | 59.0°F | 4.69 in | — | 13 |
| June | 79.2°F | 58.5°F | 68.9°F | 4.92 in | — | 11 |
| July | 82.2°F | 61.4°F | 71.8°F | 3.55 in | — | 9 |
| August | 80.7°F | 59.8°F | 70.2°F | 3.92 in | — | 9 |
| September | 75.0°F | 51.8°F | 63.4°F | 3.26 in | — | 8 |
| October | 62.2°F | 39.8°F | 51.0°F | 2.81 in | — | 9 |
| November | 46.6°F | 28.8°F | 37.7°F | 2.30 in | — | 8 |
| December | 33.7°F | 18.3°F | 26.0°F | 1.95 in | — | 9 |
Climate twins of Rochelle
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).