Windham Weather Forecast

    • 36
    • 47

    Chance Rain

    • 28
    • 51

    Snow

    • 10
    • 48

    Rain/Snow

    • 2
    • 23

    Chance Snow

    • 14
    • 26

    Chance Snow

    • 25
    • 44

    Mostly Cloudy

Today 8 Dec Judith Basin County and Judith Gap

Windy. Mostly sunny in the Morning, then mostly cloudy with a 20 percent chance of rain in the afternoon. Highs in the mid 40s. West Winds 20 to 35 Mph. Gusts up to 55 Mph decreasing to 45 Mph in the afternoon.

Tonight 8 Dec Judith Basin County and Judith Gap

Windy, cloudy. Slight chance of rain in the Evening, then chance of rain after midnight. Lows in the mid 30s. Southwest Winds 20 to 35 Mph. Gusts up to 55 Mph increasing to 65 Mph after midnight. Chance of rain 50 percent.

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Windham Temperature Statistics

December Temperature

Lewistown, Lewistown Municipal Airport (32.3 miles)

  • Lowest 1 December, 2025

    12.9 °F

  • Average December

    27.5 °F

  • Highest 4 December, 2025

    36 °F

Climate (2020–Present)

Lewistown, Lewistown Municipal Airport (32.3 miles)

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  • Average Low 2020–2025

    32.4 °F

  • Average 2020–2025

    44.6 °F

  • Average High 2020–2025

    56.5 °F
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