Heart Butte Reservoir State Game Management Area Weather Forecast

    • 45
    • 74

    Breezy

    • 42
    • 66

    Mostly Cloudy

    • 46
    • 64

    Rain Showers Likely

    • 41
    • 71

    Breezy

    • 41
    • 67

    Partly Sunny

    • 42
    • 71

    Slight Chance Rain Showers

Today 11 Sep Grant

Partly cloudy. Highs in the mid 70s. Northwest Winds around 5 Mph, increasing to north 15 to 25 Mph with Gusts up to 35 Mph.

Tonight 11 Sep Grant

Increasing Clouds. Lows in the mid 40s. Northwest Winds 5 to 15 Mph. Gusts up to 30 Mph in the evening.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Heart Butte Reservoir State Game Management Area Temperature Statistics

September Temperature

Glen Ullin Regional Airport (14.9 miles)

  • Lowest 1 September, 2026

    44.6 °F

  • Average September

    72 °F

  • Highest 5 September, 2026

    95 °F

Climate (2021–2026)

Glen Ullin Regional Airport (14.9 miles)

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  • Average Low 2021–2026

    30.2 °F

  • Average 2021–2026

    43.2 °F

  • Average High 2021–2026

    55.5 °F
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