Harlowton Weather Forecast

    • 29
    • 45

    Mostly Cloudy

    • 32
    • 49

    Chance Rain Showers

    • 29
    • 52

    Chance Rain Showers

    • 19
    • 48

    Breezy

    • 17
    • 33

    Mostly Cloudy

    • 25
    • 42

    Partly Sunny

Today 23 Dec Southern Wheatland

Partly sunny. Highs in the mid 40s. West Winds 5 to 10 Mph in the morning shifting to the east in the afternoon.

Tonight 23 Dec Southern Wheatland

Mostly cloudy. Lows in the upper 20s. Northwest Winds 5 to 10 Mph.

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Harlowton Temperature Statistics

December Temperature

Lewistown, Lewistown Municipal Airport (45.4 miles)

  • Lowest 12 December, 2025

    1 °F

  • Average December

    31.4 °F

  • Highest 15 December, 2025

    55.9 °F

Climate (2020–Present)

Lewistown, Lewistown Municipal Airport (45.4 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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