United States of America
Casper sees feels-like daytime highs peak around 32.8°C in July and nighttime lows bottom out near -8.5°C in January. May is the wettest month (~41 mm), while January is the driest (~2 mm). For sunshine, July leads with about 76% clear skies.
Based on mild feels-like temperatures and low rain chances, the most comfortable months are June, August, and July — expect around 12.5–28°C with roughly 20% chance of rain on a given day in June.
| Month | Low / High °C | Rain % | Rainfall | Clear skies | Wind |
|---|---|---|---|---|---|
| January | -8.5° / -0.4° | 1% | 2 mm | 52% | 23.8 kph |
| February | -6.5° / 2° | 2% | 3 mm | 49% | 22 kph |
| March | -2.7° / 8° | 4% | 7 mm | 47% | 20.1 kph |
| April | 1° / 13.1° | 13% | 21 mm | 49% | 18.3 kph |
| May | 6.6° / 20.1° | 23% | 41 mm | 53% | 16.6 kph |
| June☀ | 12.5° / 28° | 20% | 31 mm | 67% | 15.4 kph |
| July☀ | 16° / 32.8° | 14% | 20 mm | 76% | 14.2 kph |
| August☀ | 15.5° / 31.3° | 13% | 15 mm | 75% | 14.5 kph |
| September | 9.9° / 24° | 13% | 18 mm | 70% | 16.1 kph |
| October | 3.2° / 15.2° | 11% | 17 mm | 61% | 18.3 kph |
| November | -3.2° / 6.2° | 4% | 7 mm | 54% | 21.5 kph |
| December | -7.6° / 0° | 1% | 2 mm | 52% | 23.5 kph |
Feels-like temperatures from long-term historical data; ☀ marks the most comfortable months (mild temperatures, low rain).
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