Weather & Climate
Johnson County, Wyoming, United States
Overview
Available climate summaries for Johnson County. Origins and reference periods are unverified; stored values may include AI estimates. Treat these as estimates until independently verified.
Key Metrics
Annual Avg
4.4°C
Summer Avg
17.2°C
Winter Avg
-7°C
Record High
35.6°C
Record Low
-30.6°C
Annual Precipitation
465.7 mm
Avg Humidity
64%
Summer Humidity
51%
Winter Humidity
78%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 11.6° | -7° | -30.4° | 19.5 | 80% | 59 | 45.7 |
| Feb | 11.9° | -6.9° | -30.6° | 24.9 | 77% | 79 | 53.7 |
| Mar | 19.1° | -1.3° | -25.1° | 36.3 | 68% | 123 | 47.9 |
| Apr | 24.2° | 2.5° | -16.9° | 52.8 | 65% | 150 | 43.7 |
| May | 28.8° | 7.7° | -10.9° | 84.3 | 64% | 184 | 41.8 |
| Jun | 33.3° | 14.2° | -2° | 50.4 | 56% | 211 | 38.1 |
| Jul | 35.6° | 19.5° | 1.9° | 36.9 | 49% | 222 | 36 |
| Aug | 35.5° | 17.9° | -0.3° | 31 | 48% | 189 | 37.3 |
| Sep | 31.2° | 12.1° | -9.1° | 41.4 | 52% | 143 | 40 |
| Oct | 26.4° | 3.8° | -26.1° | 43.4 | 64% | 97 | 44.4 |
| Nov | 18.5° | -2° | -21.9° | 24.3 | 68% | 62 | 46.9 |
| Dec | 9.3° | -7.2° | -27.9° | 20.5 | 78% | 48 | 45.2 |
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.