East Thermopolis, WY
Climate overview — based on NOAA 1991-2020 normals from THERMOPOLIS, WY US.
Year-round temperatures (°F)
Climate summary
East Thermopolis has an annual average temperature of 48.6°F with about 12 inches of precipitation per year and 27.4 inches of snow. The warmest month is July (average high 91.8°F), and the coldest is January (average low 11.5°F). May is typically the wettest month (2.53 in) and January the driest (0.39 in). Snow typically falls from September through May.
Best time to visit East Thermopolis
Full guide →Climate change signal
All-time records →67 of 366 (18.3%) of East Thermopolis'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.
| 1890s | 0 | |
| 1900s | 19 | |
| 1910s | 34 | |
| 1920s | 18 | |
| 1930s | 67 | |
| 1940s | 15 | |
| 1950s | 42 | |
| 1960s | 10 | |
| 1990s | 40 | |
| 2000s | 38 | |
| 2010s | 25 | |
| 2020s | 58 |
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 | 37.3°F | 11.5°F | 24.4°F | 0.39 in | 5.4 in | 3 |
| February | 41.6°F | 15.6°F | 28.6°F | 0.44 in | 4.9 in | 4 |
| March | 54.0°F | 25.6°F | 39.8°F | 0.85 in | 2.3 in | 4 |
| April | 61.9°F | 33.4°F | 47.6°F | 1.63 in | 2.2 in | 7 |
| May | 71.4°F | 42.5°F | 57.0°F | 2.53 in | 0.2 in | 8 |
| June | 82.9°F | 50.6°F | 66.8°F | 1.31 in | — | 7 |
| July | 91.8°F | 57.1°F | 74.5°F | 0.76 in | — | 5 |
| August | 89.8°F | 55.0°F | 72.4°F | 0.50 in | — | 4 |
| September | 79.7°F | 45.7°F | 62.7°F | 1.21 in | 0.3 in | 5 |
| October | 64.5°F | 33.8°F | 49.1°F | 1.27 in | 2.1 in | 5 |
| November | 48.6°F | 21.7°F | 35.1°F | 0.60 in | 5.5 in | 4 |
| December | 37.5°F | 12.3°F | 24.9°F | 0.46 in | 4.5 in | 3 |
Climate twins of East Thermopolis
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).