Rantoul, IL
Climate overview — based on NOAA 1991-2020 normals from RANTOUL, IL US.
Year-round temperatures (°F)
Climate summary
Rantoul has an annual average temperature of 52.3°F with about 40.4 inches of precipitation per year. The warmest month is July (average high 87.5°F), and the coldest is January (average low 15.8°F). June is typically the wettest month (4.61 in) and February the driest (2.01 in).
Best time to visit Rantoul
Full guide →Climate change signal
All-time records →31 of 366 (8.5%) of Rantoul'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 | 29 | |
| 1900s | 49 | |
| 1910s | 23 | |
| 1940s | 8 | |
| 1950s | 37 | |
| 1960s | 14 | |
| 1970s | 16 | |
| 1980s | 41 | |
| 1990s | 48 | |
| 2000s | 39 | |
| 2010s | 53 | |
| 2020s | 9 |
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 | 34.4°F | 15.8°F | 25.1°F | 2.54 in | — | 8 |
| February | 39.6°F | 19.6°F | 29.6°F | 2.01 in | — | 7 |
| March | 51.4°F | 29.3°F | 40.4°F | 2.58 in | — | 9 |
| April | 64.3°F | 39.6°F | 51.9°F | 3.98 in | — | 10 |
| May | 75.4°F | 51.3°F | 63.3°F | 4.33 in | — | 11 |
| June | 84.9°F | 61.7°F | 73.3°F | 4.61 in | — | 10 |
| July | 87.5°F | 64.1°F | 75.8°F | 4.44 in | — | 9 |
| August | 85.9°F | 61.6°F | 73.7°F | 3.86 in | — | 8 |
| September | 80.7°F | 54.3°F | 67.5°F | 3.28 in | — | 7 |
| October | 67.3°F | 42.1°F | 54.7°F | 3.32 in | — | 8 |
| November | 52.3°F | 31.4°F | 41.8°F | 3.19 in | — | 9 |
| December | 39.8°F | 22.1°F | 30.9°F | 2.21 in | — | 7 |
Climate twins of Rantoul
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).