Thermopolis, Wyoming Climate
United States
Pop. 2,974 Elev. 1,323 m / 4,341 ft
TZ: America/Denver (UTC-6) ·
Winters in Thermopolis are severe, with temperatures dropping to 6°F (-14°C) in January, while summers bring warm highs of 91°F (33°C) in July. Wind chill can push winter lows to -1°F (-18°C). Expect around 13 rainy days annually (9.1 in / 230 mm total), with snow on 6 days and 37 in (932 mm) of annual accumulation. The city averages 172 sunny days per year.
| Temperature | 91°F (33°C) high | 6°F (-15°C) low |
| Feels like | -1°F (-18°C) low | |
| Rain | 13 days | 9.1 in (230 mm) /yr |
| Snow | 6 days | 36.7 in (932 mm) /yr |
| Sky | 172 sunny | 5 stormy |
| Wind | 2.1 mph (0.9 m/s) avg |
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Explore on the MapMonthly Climate Chart
Best months to visit: Aug, Sep
Sky & Air by Month
Cloud cover (%)
47
Jan 50
Feb 54
Mar 54
Apr 44
May 39
Jun 36
Jul 38
Aug 34
Sep 36
Oct 49
Nov 46
Dec Humidity (%)
70
Jan 56
Feb 50
Mar 45
Apr 55
May 40
Jun 31
Jul 33
Aug 40
Sep 63
Oct 61
Nov 58
Dec Weather Days by Month
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 42 mi Central Wyoming Regional Airport (RIW)
Ski resort 49 mi Wood River Valley Ski Touring Park
National park 97 mi Bighorn Canyon National Recreation Area
Mountain peak
(4,997 ft) 1 mi Round Top
Hospital 1 mi Hot Springs County Memorial Hospital
Hiking trail 70 mi Dry Horse Trail
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 28°F -2°C | 6°F -15°C | 0.0 in 0 mm | 4.6 in116 mm | 11 |
| February | 39°F 4°C | 13°F -11°C | 0.0 in 1 mm | 4.1 in105 mm | 11 |
| March | 54°F 12°C | 28°F -2°C | 0.2 in 4 mm | 14.8 in377 mm | 12 |
| April | 60°F 16°C | 32°F 0°C | 1.2 in 30 mm | 7.8 in198 mm | 10 |
| May | 69°F 21°C | 43°F 6°C | 2.1 in 53 mm | 2.9 in74 mm | 17 |
| June | 82°F 28°C | 52°F 11°C | 1.0 in 26 mm | — | 15 |
| July | 91°F 33°C | 59°F 15°C | 0.9 in 23 mm | — | 18 |
| August | 88°F 31°C | 58°F 15°C | 0.5 in 14 mm | — | 19 |
| September | 79°F 26°C | 51°F 10°C | 0.6 in 15 mm | — | 18 |
| October | 60°F 16°C | 37°F 3°C | 2.1 in 52 mm | 0.6 in14 mm | 18 |
| November | 52°F 11°C | 31°F -1°C | 0.3 in 8 mm | 0.9 in22 mm | 11 |
| December | 47°F 8°C | 27°F -3°C | 0.1 in 4 mm | 1.1 in27 mm | 12 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 11 | 0 |
| February | 11 | 0 |
| March | 12 | 0 |
| April | 10 | 0 |
| May | 17 | 2 |
| June | 15 | 0 |
| July | 18 | 1 |
| August | 19 | 0 |
| September | 18 | 0 |
| October | 18 | 2 |
| November | 11 | 0 |
| December | 12 | 0 |