Thermopolis Weather Forecast

    • 59
    • 92

    Mostly Sunny

    • 57
    • 91

    Mostly Sunny

    • 59
    • 89

    Chance Rain Showers

    • 50
    • 82

    Breezy

    • 51
    • 80

    Mostly Sunny

    • 55
    • 82

    Partly Sunny

    • 56
    • 84

    Partly Sunny

Today 4 Sep Southwest Bighorn Basin

Sunny, breezy. Near steady temperature in the upper 80s. Southwest Winds 15 to 20 Mph with Gusts up to 30 Mph.

Tonight 4 Sep Southwest Bighorn Basin

Mostly clear and breezy. Lows in the upper 50s. Southwest Winds 15 to 20 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Thermopolis Temperature Statistics

September Temperature

Worland, Worland Municipal Airport (25.5 miles)

  • Lowest 2 September, 2026

    54 °F

  • Average September

    71.2 °F

  • Highest 2 September, 2026

    88 °F

Climate (2021–2026)

Worland, Worland Municipal Airport (25.5 miles)

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  • Average Low 2021–2026

    31 °F

  • Average 2021–2026

    46 °F

  • Average High 2021–2026

    61.3 °F
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