Gann Valley Weather Forecast

    • 29
    • 41

    Increasing Clouds

    • 27
    • 49

    Partly Sunny

    • 32
    • 40

    Mostly Cloudy

    • 34
    • 53

    Mostly Sunny

    • 26
    • 57

    Mostly Cloudy

    • 23
    • 44

    Partly Sunny

Today 21 Dec Buffalo

Partly sunny. Highs in the lower 40s. Southeast Winds 5 to 10 Mph.

Tonight 21 Dec Buffalo

Mostly clear. Near steady temperature around 18. Southeast Winds around 5 Mph.

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Gann Valley Temperature Statistics

December Temperature

Chamberlain, Chamberlain Municipal Airport (24.2 miles)

  • Lowest 14 December, 2025

    -13.5 °F

  • Average December

    24.8 °F

  • Highest 17 December, 2025

    56.8 °F

Climate (2020–Present)

Chamberlain, Chamberlain Municipal Airport (24.2 miles)

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  • Average Low 2020–2025

    36.4 °F

  • Average 2020–2025

    47.6 °F

  • Average High 2020–2025

    59.3 °F
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