Thunder Basin National Grassland Weather Forecast

    • 44
    • 68

    Slight Chance Thunderstorms

    • 47
    • 70

    Rain Showers Likely

    • 46
    • 57

    Rain Showers

    • 42
    • 57

    Rain Showers Likely

    • 42
    • 62

    Partly Sunny

    • 44
    • 68

    Partly Sunny

Today 22 May Southern Campbell

Mostly sunny this Morning, then becoming partly cloudy. Highs in the upper 60s. South Winds 5 to 10 Mph with Gusts up to 20 Mph, increasing to southeast 10 to 20 Mph with Gusts up to 30 Mph this afternoon.

Tonight 22 May Southern Campbell

Mostly cloudy with a slight chance of Showers and Thunderstorms in the Evening, then partly cloudy after midnight. Lows in the lower 40s. Southeast Winds 10 to 20 Mph with Gusts up to 30 Mph. Chance of rain 20 percent.

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Thunder Basin National Grassland Temperature Statistics

May Temperature

Douglas, Converse County Airport (51 miles)

  • Lowest 2 May, 2025

    28.9 °F

  • Average May

    53.6 °F

  • Highest 11 May, 2025

    85.6 °F

Climate (2020–Present)

Douglas, Converse County Airport (51 miles)

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  • Average Low 2020–2025

    32.5 °F

  • Average 2020–2025

    47.3 °F

  • Average High 2020–2025

    61.8 °F
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