Best year time to visit Thermopolis

General weather information about Thermopolis

Average annual temperature is 8.4 °C

Absolute maximum temperature: 37.1 °C

Absolute minimum temperature: -28.0 °C

Number of sunny days: 222 days

Number of rainy days: 101 days

Number of snow days: 42 days

Look at detailed online map of Thermopolis

* Weather data for Thermopolis United States is based on climate observations for 2026 year

Thermopolis air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)2.94.68.421.729.629.037.136.232.927.116.59.6
Average daytime temperature (°C)-2.3-1.80.69.822.723.731.529.926.415.48.02.8
Average temperature (°C)-5.5-6.1-3.54.516.517.624.023.018.89.02.9-1.7
Average night temperature (°C)-8.3-9.4-7.20.310.612.816.816.712.54.5-1.2-5.3
Absolute minimum temperature (°C)-28.0-26.8-13.1-9.86.49.410.811.67.7-9.3-13.5-14.2

Thermopolis monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)9.011.012.014.015.015.015.014.013.011.010.09.0
Daylight mean duration (h)9.410.511.913.414.715.415.113.912.511.09.79.0
Daylight minimum duration (h)8.09.011.012.014.015.014.013.011.010.09.08.0
Sunshine mean duration (h)5.88.19.110.611.711.613.111.610.98.37.57.3
Precipitation (mm)313042253811412422162256
Sunny days17191917125181922222428
Rainy days1225192513128950
Snow days13710800000013

Thermopolis - weather forecast by months

Thermopolis weather in januaryThermopolis weather in februaryThermopolis weather in marchThermopolis weather in aprilThermopolis weather in mayThermopolis weather in juneThermopolis weather in julyThermopolis weather in augustThermopolis weather in septemberThermopolis weather in octoberThermopolis weather in novemberThermopolis weather in december

Best time to visit Thermopolis:

The best time to visit Thermopolis during the most sunny months:

  • July — 13.1(h)

Months with the longest average daylight duration in Thermopolis:

  • June — 15.4(h)

The largest precipitation sum in Thermopolis is at

  • June — 114(mm)
  • October — 62(mm)

    • Weather forecast in the closest to Thermopolis admin centers

    Weather forecast in the closest towns to Thermopolis

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    Frequently asked questions

    When is the best time to visit Thermopolis?
    The historical weather data above shows the warmest, sunniest and driest months to help you choose the best time to visit Thermopolis.
    What is the weather like in Thermopolis?
    See average temperature, rainfall and daylight hours for Thermopolis by month in the table above.
    How many sunny days does Thermopolis have?
    The monthly weather statistics above show sunshine and rainfall patterns for Thermopolis throughout the year.