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Weather & Climate
McCook County, South Dakota, United States
Overview
Climate data and monthly weather averages for McCook County.
Key Metrics
Annual Avg
8.9°C
Summer Avg
23.2°C
Winter Avg
-5.9°C
Record High
43.7°C
Record Low
-33.2°C
Annual Precipitation
649.7 mm
Avg Humidity
69%
Summer Humidity
63%
Winter Humidity
80%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 13.8° | -7.1° | -33.2° | 12.1 | 82% | 63 | 66.2 |
| Feb | 22° | -5.6° | -27.9° | 18.2 | 77% | 87 | 61.3 |
| Mar | 29.6° | 1.9° | -28.6° | 32.9 | 70% | 120 | 65.7 |
| Apr | 33.3° | 8.7° | -13.9° | 71.7 | 65% | 150 | 62.9 |
| May | 36.6° | 15.3° | -4.8° | 87.7 | 64% | 179 | 56.6 |
| Jun | 39.9° | 21.6° | 5.5° | 104.7 | 66% | 194 | 52.2 |
| Jul | 43.7° | 25.1° | 8.8° | 72.9 | 60% | 210 | 44.6 |
| Aug | 40.7° | 23° | 7.8° | 81.5 | 63% | 174 | 47.2 |
| Sep | 38.4° | 18.3° | 1° | 71.4 | 62% | 133 | 52.9 |
| Oct | 31.8° | 9.2° | -12.3° | 53.3 | 67% | 95 | 62.7 |
| Nov | 25.4° | 1.9° | -17.2° | 21.3 | 72% | 64 | 59.5 |
| Dec | 14.1° | -5° | -28.1° | 22 | 82% | 50 | 65.3 |
Frequently Asked Questions
Sources: NASA POWER · Last updated: 2025
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