Glen Ullin Weather Forecast

    • 21
    • 51

    Partly Sunny

    • 21
    • 37

    Partly Sunny

    • 12
    • 32

    Partly Sunny

    • 17
    • 27

    Mostly Sunny

    • 27
    • 45

    Partly Sunny

    • 27
    • 43

    Partly Sunny

Today 7 Jan Morton

Mostly cloudy. Highs in the upper 40s. Southwest Winds 5 to 10 Mph.

Tonight 7 Jan Morton

Increasing Clouds. Lows in the lower 20s. West Winds 5 to 10 Mph.

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Glen Ullin Temperature Statistics

January Temperature

Glen Ullin Regional Airport (1.2 miles)

  • Lowest 1 January, 2026

    15.8 °F

  • Average January

    22.3 °F

  • Highest 4 January, 2026

    41 °F

Climate (2021–Present)

Glen Ullin Regional Airport (1.2 miles)

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  • Average Low 2021–2026

    29.9 °F

  • Average 2021–2026

    43.1 °F

  • Average High 2021–2026

    55.3 °F
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