Harlowton Weather Forecast

    • 45
    • 79

    Increasing Clouds

    • 49
    • 81

    Mostly Cloudy

    • 47
    • 83

    Partly Sunny

    • 46
    • 81

    Mostly Sunny

    • 48
    • 83

    Mostly Sunny

    • 50
    • 82

    Partly Sunny

Today 31 Aug Southern Wheatland

Sunny. Highs in the upper 70s. West Winds 5 to 15 Mph.

Tonight 31 Aug Southern Wheatland

Partly cloudy. Lows in the mid 40s. North Winds 5 to 10 Mph.

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Harlowton Temperature Statistics

August Temperature

Lewistown, Lewistown Municipal Airport (45.4 miles)

  • Lowest 4 August, 2026

    38.6 °F

  • Average August

    66.8 °F

  • Highest 1 August, 2026

    101.6 °F

Climate (2021–2026)

Lewistown, Lewistown Municipal Airport (45.4 miles)

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  • Average Low 2021–2026

    32.5 °F

  • Average 2021–2026

    44.8 °F

  • Average High 2021–2026

    56.9 °F
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