Mount Carroll, IL
Climate overview — based on NOAA 1991-2020 normals from MT CARROLL, IL US.
Year-round temperatures (°F)
Climate summary
Mount Carroll has an annual average temperature of 48.5°F with about 40.3 inches of precipitation per year and 33.4 inches of snow. The warmest month is July (average high 84.9°F), and the coldest is January (average low 10.9°F). June is typically the wettest month (5.49 in) and January the driest (1.66 in). Snow typically falls from October through April.
Best time to visit Mount Carroll
Full guide →Climate change signal
All-time records →37 of 366 (10.1%) of Mount Carroll'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 | 2 | |
| 1900s | 26 | |
| 1910s | 42 | |
| 1920s | 31 | |
| 1930s | 67 | |
| 1940s | 21 | |
| 1950s | 17 | |
| 1960s | 12 | |
| 1970s | 8 | |
| 1980s | 24 | |
| 1990s | 26 | |
| 2000s | 27 | |
| 2010s | 48 | |
| 2020s | 15 |
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 | 30.7°F | 10.9°F | 20.8°F | 1.66 in | 10.2 in | 9 |
| February | 35.3°F | 14.3°F | 24.8°F | 1.83 in | 7.9 in | 8 |
| March | 47.5°F | 25.7°F | 36.6°F | 2.51 in | 3.6 in | 9 |
| April | 60.6°F | 35.8°F | 48.2°F | 3.90 in | 0.8 in | 11 |
| May | 72.3°F | 47.3°F | 59.8°F | 4.57 in | — | 13 |
| June | 81.7°F | 57.0°F | 69.4°F | 5.49 in | — | 12 |
| July | 84.9°F | 60.4°F | 72.6°F | 4.89 in | — | 9 |
| August | 83.3°F | 58.1°F | 70.7°F | 3.91 in | — | 9 |
| September | 76.9°F | 49.6°F | 63.3°F | 3.71 in | — | 9 |
| October | 63.9°F | 38.3°F | 51.1°F | 3.02 in | 0.4 in | 9 |
| November | 48.5°F | 27.4°F | 38.0°F | 2.60 in | 1.7 in | 8 |
| December | 35.8°F | 17.1°F | 26.4°F | 2.21 in | 8.8 in | 9 |
Climate twins of Mount Carroll
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).