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Weather & Climate
Blue Mound, Illinois, United States
Overview
Climate data and monthly weather averages for Blue Mound.
Key Metrics
Annual Avg
11.9°C
Summer Avg
23.8°C
Winter Avg
-1.1°C
Record High
42.6°C
Record Low
-26.3°C
Annual Precipitation
1057.3 mm
Avg Humidity
77%
Summer Humidity
75%
Winter Humidity
83%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 19.6° | -2.5° | -26.3° | 60.4 | 83% | 60 | 60.6 |
| Feb | 21.8° | -0.9° | -25° | 59.1 | 82% | 77 | 63 |
| Mar | 26.3° | 5.6° | -17° | 76.6 | 78% | 115 | 62.3 |
| Apr | 29.2° | 12.3° | -6.7° | 111.9 | 75% | 149 | 59.4 |
| May | 32.6° | 17.9° | -0.1° | 122.1 | 78% | 173 | 57.8 |
| Jun | 41° | 22.8° | 4.3° | 118.5 | 77% | 192 | 52.4 |
| Jul | 42.6° | 24.7° | 9.4° | 100.8 | 75% | 198 | 35.3 |
| Aug | 39.7° | 24° | 9.4° | 89.9 | 73% | 175 | 43.1 |
| Sep | 38.6° | 20.2° | 2.4° | 77.4 | 71% | 142 | 55.6 |
| Oct | 33.1° | 12.9° | -4.4° | 94.9 | 72% | 102 | 54.4 |
| Nov | 26.5° | 5.9° | -12.9° | 75.6 | 77% | 68 | 57 |
| Dec | 21.4° | 0.1° | -23.7° | 70.1 | 83% | 51 | 70.9 |
Frequently Asked Questions
Sources: NASA POWER · Last updated: 2025
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