Harrison Weather Forecast

    • 10
    • 26

    Chance Snow

    • 20
    • 37

    Partly Sunny

    • 20
    • 37

    Mostly Cloudy

    • 19
    • 38

    Mostly Cloudy

    • 22
    • 41

    Partly Sunny

    • 23
    • 46

    Partly Sunny

Today 3 Dec North Sioux

Mostly cloudy. A slight chance of snow after Midnight, then a chance of snow this morning. A slight chance of snow this afternoon. Snow accumulation up to 1 inch possible. Colder with Highs in the upper 20s. Northwest Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of snow 50 percent.

Tonight 3 Dec North Sioux

Mostly clear. Cold with Lows 8 to 14 above. Southwest Winds 10 to 15 Mph. Wind chill Values as low as 6 below after midnight.

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Harrison Temperature Statistics

December Temperature

Chadron, Chadron Municipal Airport (41 miles)

  • Lowest 1 December, 2025

    0 °F

  • Average December

    7.2 °F

  • Highest 1 December, 2025

    19.9 °F

Climate (2020–Present)

Chadron, Chadron Municipal Airport (41 miles)

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  • Average Low 2020–2025

    35.5 °F

  • Average 2020–2025

    49.5 °F

  • Average High 2020–2025

    63.6 °F
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