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Weather & Climate
Buchanan County, Iowa, United States
Overview
Climate data and monthly weather averages for Buchanan County.
Key Metrics
Annual Avg
8.6°C
Summer Avg
21.9°C
Winter Avg
-5.9°C
Record High
41.1°C
Record Low
-34.9°C
Annual Precipitation
934.5 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 | 10.4° | -7.5° | -34.9° | 27.6 | 87% | 57 | 58.9 |
| Feb | 20.2° | -5.8° | -27.3° | 31.9 | 85% | 80 | 76.1 |
| Mar | 25.8° | 1.6° | -26.9° | 49.9 | 79% | 118 | 64.2 |
| Apr | 28.8° | 8.7° | -12.2° | 95.4 | 74% | 142 | 70.1 |
| May | 33.7° | 15.1° | -3.5° | 112.2 | 75% | 174 | 54.1 |
| Jun | 38.6° | 20.9° | 4.9° | 144.9 | 77% | 184 | 47.4 |
| Jul | 41.1° | 23.1° | 8.4° | 106 | 75% | 195 | 38.9 |
| Aug | 38.1° | 21.8° | 6.9° | 102.3 | 73% | 170 | 36.4 |
| Sep | 34.1° | 17.6° | 0.5° | 94.2 | 73% | 132 | 50.6 |
| Oct | 29.9° | 9.6° | -5.2° | 75 | 75% | 90 | 57.6 |
| Nov | 23.5° | 2.4° | -16.3° | 48.9 | 80% | 60 | 57.5 |
| Dec | 19.9° | -4.5° | -30° | 46.2 | 87% | 45 | 62.7 |
Frequently Asked Questions
Sources: NASA POWER · Last updated: 2025
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