Rock Springs, WY
Climate overview — based on NOAA 1991-2020 normals from ROCK SPRINGS FIRE DEPT, WY US.
Year-round temperatures (°F)
Climate summary
Rock Springs has an annual average temperature of 45°F with about 10.4 inches of precipitation per year and 31.3 inches of snow. The warmest month is July (average high 86.3°F), and the coldest is January (average low 12.4°F). May is typically the wettest month (1.88 in) and February the driest (0.43 in). Snow typically falls from October through May.
Best time to visit Rock Springs
Full guide →Climate change signal
All-time records →196 of 366 (53.6%) of Rock Springs's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.
| 2000s | 101 | |
| 2010s | 142 | |
| 2020s | 123 |
Bars: number of all-time daily heat records still standing that were set in each decade.
Monthly averages
| Month | Avg High | Avg Low | Avg Temp | Precipitation | Snow | Rainy days |
|---|---|---|---|---|---|---|
| January | 34.6°F | 12.4°F | 23.5°F | 0.45 in | 6.1 in | 4 |
| February | 37.9°F | 15.1°F | 26.5°F | 0.43 in | 5.8 in | 5 |
| March | 48.6°F | 23.4°F | 36.0°F | 0.61 in | 4.4 in | 4 |
| April | 56.8°F | 29.5°F | 43.1°F | 1.07 in | 1.9 in | 6 |
| May | 67.3°F | 37.4°F | 52.3°F | 1.88 in | 0.5 in | 9 |
| June | 78.6°F | 45.2°F | 61.9°F | 0.82 in | — | 5 |
| July | 86.3°F | 52.5°F | 69.4°F | 0.92 in | — | 4 |
| August | 84.4°F | 50.7°F | 67.6°F | 0.89 in | — | 5 |
| September | 75.0°F | 41.2°F | 58.1°F | 1.17 in | — | 6 |
| October | 61.3°F | 31.4°F | 46.3°F | 1.03 in | 2.3 in | 5 |
| November | 44.7°F | 20.7°F | 32.7°F | 0.66 in | 3.8 in | 4 |
| December | 33.2°F | 12.4°F | 22.8°F | 0.52 in | 6.5 in | 6 |
Climate twins of Rock Springs
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).