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Weather & Climate
Cass County, North Dakota, United States
Overview
Climate data and monthly weather averages for Cass County.
Key Metrics
Annual Avg
6.1°C
Summer Avg
21.1°C
Winter Avg
-10.3°C
Record High
42.8°C
Record Low
-40.4°C
Annual Precipitation
587.6 mm
Avg Humidity
72%
Summer Humidity
63%
Winter Humidity
86%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 9.4° | -12° | -40.4° | 13 | 89% | 56 | 58.7 |
| Feb | 17.1° | -10.1° | -33.7° | 14.3 | 84% | 84 | 68.4 |
| Mar | 26.7° | -1.4° | -28.8° | 28.5 | 73% | 122 | 69 |
| Apr | 30.1° | 6.3° | -14.7° | 42.6 | 64% | 148 | 56.7 |
| May | 34.6° | 13.4° | -5° | 84.3 | 64% | 173 | 56.9 |
| Jun | 40.2° | 19.4° | 2.1° | 103.5 | 66% | 185 | 52.2 |
| Jul | 42.8° | 22.9° | 6.8° | 76.9 | 62% | 201 | 51.2 |
| Aug | 39.5° | 21.1° | 3.8° | 67.3 | 62% | 168 | 55.4 |
| Sep | 38.2° | 15.8° | -1.8° | 67.2 | 65% | 122 | 50.1 |
| Oct | 31° | 6.8° | -11.2° | 51.8 | 70% | 80 | 65.5 |
| Nov | 21.4° | -0.9° | -21.8° | 16.2 | 77% | 49 | 60.2 |
| Dec | 8.4° | -8.7° | -34° | 22 | 86% | 38 | 62.7 |
Frequently Asked Questions
Sources: NASA POWER · Last updated: 2025
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