Gillette Weather Forecast

    • 12
    • 21

    Chance Snow

    • 22
    • 24

    Chance Snow

    • 31
    • 53

    Mostly Sunny

    • 39
    • 54

    Partly Sunny

    • 35
    • 57

    Mostly Cloudy

    • 22
    • 51

    Chance Rain

Today 12 Dec Northern Campbell

Mostly cloudy with snow likely. Little or no additional snow accumulation. Much cooler with Highs 15 to 20. Northeast Winds 5 to 10 Mph. Chance of snow 70 percent. Wind chill Values near zero.

Tonight 12 Dec Northern Campbell

Partly cloudy in the Evening, then becoming mostly cloudy. Lows around 10. Southeast Winds 5 to 10 Mph, becoming southwest after midnight.

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Gillette Temperature Statistics

December Temperature

Gillette, Gillette-Campbell County Airport (3.7 miles)

  • Lowest 1 December, 2025

    5 °F

  • Average December

    32.3 °F

  • Highest 9 December, 2025

    52 °F

Climate (2020–Present)

Gillette, Gillette-Campbell County Airport (3.7 miles)

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  • Average Low 2020–2025

    34.9 °F

  • Average 2020–2025

    47.9 °F

  • Average High 2020–2025

    60.7 °F
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