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Weather & Climate
Sparta, Illinois, United States
Overview
Climate data and monthly weather averages for Sparta.
Key Metrics
Annual Avg
13.3°C
Summer Avg
25°C
Winter Avg
0.8°C
Record High
43.6°C
Record Low
-21.2°C
Annual Precipitation
1136.2 mm
Avg Humidity
76%
Summer Humidity
74%
Winter Humidity
82%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 21.6° | -0.5° | -21.2° | 63.5 | 82% | 64 | 46.4 |
| Feb | 23.4° | 1.2° | -19° | 69.2 | 81% | 79 | 47.5 |
| Mar | 27.1° | 7.3° | -13.9° | 103.2 | 79% | 117 | 47.8 |
| Apr | 29.8° | 13.6° | -5.9° | 127.5 | 77% | 151 | 43.8 |
| May | 33.9° | 18.8° | 1.1° | 133.6 | 79% | 174 | 46 |
| Jun | 43.6° | 23.8° | 7.5° | 98.1 | 77% | 194 | 38.2 |
| Jul | 42.6° | 25.9° | 12.3° | 103.2 | 74% | 196 | 25.5 |
| Aug | 41.3° | 25.3° | 9.8° | 91.1 | 70% | 177 | 29.4 |
| Sep | 38.4° | 21.3° | 3.8° | 78 | 69% | 143 | 44.1 |
| Oct | 35° | 14.1° | -4° | 96.1 | 71% | 106 | 40.6 |
| Nov | 27.4° | 7.2° | -10.5° | 93.3 | 76% | 72 | 43.6 |
| Dec | 21.9° | 1.8° | -16.5° | 79.4 | 82% | 55 | 46 |
Frequently Asked Questions
Sources: NASA POWER · Last updated: 2025
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