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Weather & Climate
Shell Rock, Iowa, United States
Overview
Climate data and monthly weather averages for Shell Rock.
Key Metrics
Annual Avg
8.7°C
Summer Avg
22.1°C
Winter Avg
-5.9°C
Record High
41.8°C
Record Low
-35.4°C
Annual Precipitation
926.8 mm
Avg Humidity
78%
Summer Humidity
75%
Winter Humidity
86%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 10.8° | -7.4° | -35.4° | 26 | 87% | 60 | 61.1 |
| Feb | 19.9° | -5.7° | -27.9° | 31.4 | 84% | 85 | 75.7 |
| Mar | 26.1° | 1.7° | -27.8° | 49.3 | 78% | 121 | 63.4 |
| Apr | 29.5° | 8.9° | -12.1° | 97.8 | 74% | 143 | 72.9 |
| May | 34.6° | 15.3° | -3.7° | 117.8 | 75% | 174 | 52.3 |
| Jun | 39° | 21.1° | 4.4° | 140.7 | 76% | 185 | 47.7 |
| Jul | 41.8° | 23.3° | 8.2° | 103.9 | 75% | 197 | 38.6 |
| Aug | 38.4° | 21.9° | 6.6° | 106.6 | 73% | 171 | 37 |
| Sep | 34° | 17.8° | 0.8° | 91.5 | 72% | 132 | 50.5 |
| Oct | 29.9° | 9.7° | -5.5° | 72.2 | 74% | 91 | 58 |
| Nov | 24.2° | 2.5° | -16.2° | 45.9 | 79% | 61 | 59.6 |
| Dec | 20.1° | -4.5° | -30.3° | 43.7 | 86% | 48 | 64 |
Frequently Asked Questions
Sources: NASA POWER · Last updated: 2025
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