Eureka Reservoir Weather Forecast

    • 44
    • 66

    Decreasing Clouds

    • 46
    • 73

    Mostly Sunny

    • 49
    • 78

    Mostly Sunny

    • 51
    • 77

    Mostly Sunny

    • 50
    • 76

    Mostly Sunny

    • 50
    • 75

    Partly Sunny

    • 46
    • 71

    Mostly Cloudy

Today 19 Sep Southern High Plains

Cooler. Mostly cloudy. A 20 percent chance of rain. Lows in the upper 40s. Highs around 60.

Tonight 19 Sep Southern High Plains

Mostly cloudy early in the evening then becoming partly cloudy. Lows in the mid 40s. Southeast Winds up to 5 Mph shifting to the southwest after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Eureka Reservoir Temperature Statistics

September Temperature

Cut Bank, Cut Bank Municipal Airport (49.7 miles)

  • Lowest 17 September, 2026

    37 °F

  • Average September

    55.6 °F

  • Highest 1 September, 2026

    82.7 °F

Climate (2021–2026)

Cut Bank, Cut Bank Municipal Airport (49.7 miles)

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  • Average Low 2021–2026

    31.5 °F

  • Average 2021–2026

    43.8 °F

  • Average High 2021–2026

    55.5 °F
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