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Weather & Climate

Thermopolis, Wyoming, United States

Overview

Climate data and monthly weather averages for Thermopolis.

Key Metrics

Annual Avg
8.5°C
Summer Avg
21.6°C
Winter Avg
-3.3°C
Record High
39.9°C
Record Low
-24°C
Annual Precipitation
314 mm
Avg Humidity
53%
Summer Humidity
40%
Winter Humidity
64%

Monthly Averages

MonthHigh (°C)Avg (°C)Low (°C)Rain (mm)Humidity (%)Sunshine (h)Wind (kph)
Jan15.8°-3.4°-23.7°11.565%6555.8
Feb16.8°-2.5°-24°16.261%8760.4
Mar23.4°2.6°-18.8°23.356%13467
Apr29°6.6°-10.1°39.653%16555
May35.2°12.3°-6.2°62.352%19854.8
Jun37.6°18.8°1.1°30.344%22348.3
Jul39.9°23.9°20.839%22850.9
Aug38.4°22.1°4.3°19.538%19759.2
Sep36.8°16.1°-4.9°30.643%15248.5
Oct29.7°7.6°-15.9°29.454%10649.5
Nov21.9°1.3°-19.6°15.659%6853.5
Dec13.8°-4°-23°14.966%5260.4

Frequently Asked Questions

Sources: NASA POWER · Last updated: 2025

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