Box Elder Weather Forecast

    • 39
    • 53

    Mostly Cloudy

    • 36
    • 58

    Partly Sunny

    • 36
    • 66

    Partly Sunny

    • 31
    • 62

    Mostly Sunny

    • 15
    • 46

    Breezy

    • 18
    • 30

    Mostly Sunny

Today 23 Dec Pennington Co Plains

Mostly cloudy. Highs in the upper 40s. Southeast Winds 10 to 20 Mph.

Tonight 23 Dec Pennington Co Plains

Mostly cloudy. Lows in the upper 30s. South Winds 10 to 15 Mph with Gusts up to 25 Mph.

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Box Elder Temperature Statistics

December Temperature

Ellsworth Air Force Base (2.5 miles)

  • Lowest 13 December, 2025

    5.9 °F

  • Average December

    32.6 °F

  • Highest 17 December, 2025

    64 °F

Climate (2020–Present)

Ellsworth Air Force Base (2.5 miles)

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  • Average Low 2020–2025

    37.7 °F

  • Average 2020–2025

    49.2 °F

  • Average High 2020–2025

    60.8 °F
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