Weather & Climate
Casper, Wyoming, United States
Overview
Available climate summaries for Casper. Origins and reference periods are unverified; stored values may include AI estimates. Treat these as estimates until independently verified.
Key Metrics
Annual Avg
8.3°C
Summer Avg
21.6°C
Winter Avg
-3.7°C
Record High
39.3°C
Record Low
-28.3°C
Annual Precipitation
394.7 mm
Avg Humidity
55%
Summer Humidity
42%
Winter Humidity
68%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 16.1° | -3.9° | -28.3° | 17.7 | 70% | 67 | 67.6 |
| Feb | 16.4° | -3° | -25.9° | 21.6 | 66% | 83 | 75.1 |
| Mar | 24° | 2.3° | -19.8° | 34.1 | 59% | 130 | 77.6 |
| Apr | 28.4° | 6.2° | -11.5° | 47.4 | 57% | 161 | 59.8 |
| May | 34° | 11.9° | -8.1° | 70.7 | 54% | 198 | 59.1 |
| Jun | 38.6° | 18.8° | 0.8° | 38.7 | 46% | 226 | 56.4 |
| Jul | 39.3° | 23.8° | 6° | 34.1 | 41% | 228 | 48.5 |
| Aug | 38.3° | 22.1° | 5.1° | 24.2 | 40% | 198 | 52.3 |
| Sep | 36.5° | 16.3° | -3.7° | 30.3 | 43% | 155 | 53.4 |
| Oct | 29.9° | 7.5° | -17.8° | 35.3 | 54% | 108 | 64.8 |
| Nov | 21.1° | 1.2° | -19.8° | 19.8 | 60% | 71 | 62.6 |
| Dec | 14.1° | -4.1° | -24.1° | 20.8 | 69% | 54 | 59.8 |
Data sources
Estimates and unverified origins
Oyster List climate data - Climate origins are unverified. Available methods include historical APIs and AI estimates; stored rows do not identify the original dataset, reference period, or model for each value. Treat these summaries as estimates until independently verified. Record updated 2026-03-22.