Mounds, IL
Climate overview — based on NOAA 1991-2020 normals from CAIRO 3N, IL US.
Year-round temperatures (°F)
Climate summary
Mounds has an annual average temperature of 58.1°F with about 51 inches of precipitation per year. The warmest month is July (average high 88.7°F), and the coldest is January (average low 26.0°F). April is typically the wettest month (5.38 in) and August the driest (3.18 in).
Best time to visit Mounds
Full guide →Climate change signal
All-time records →10 of 366 (2.7%) of Mounds'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.
| 1900s | 5 | |
| 1910s | 41 | |
| 1920s | 31 | |
| 1930s | 44 | |
| 1940s | 19 | |
| 1950s | 67 | |
| 1960s | 28 | |
| 1970s | 15 | |
| 1980s | 45 | |
| 1990s | 13 | |
| 2000s | 22 | |
| 2010s | 26 | |
| 2020s | 10 |
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 | 43.4°F | 26.0°F | 34.7°F | 3.80 in | — | — |
| February | 48.2°F | 29.5°F | 38.9°F | 3.88 in | — | — |
| March | 58.6°F | 37.6°F | 48.1°F | 4.85 in | — | — |
| April | 69.9°F | 47.5°F | 58.7°F | 5.38 in | — | — |
| May | 78.3°F | 57.7°F | 68.0°F | 5.08 in | — | — |
| June | 85.9°F | 66.1°F | 76.0°F | 4.37 in | — | — |
| July | 88.7°F | 69.6°F | 79.2°F | 4.10 in | — | — |
| August | 87.8°F | 67.5°F | 77.6°F | 3.18 in | — | — |
| September | 81.7°F | 59.6°F | 70.6°F | 3.51 in | — | — |
| October | 70.9°F | 47.7°F | 59.3°F | 4.14 in | — | — |
| November | 57.9°F | 37.4°F | 47.6°F | 4.46 in | — | — |
| December | 46.7°F | 30.1°F | 38.4°F | 4.25 in | — | — |
Climate twins of Mounds
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).