Longs Reservoir Weather Forecast

    • 46
    • 66

    Mostly Sunny

    • 49
    • 74

    Increasing Clouds

    • 34
    • 74

    Chance Rain

    • 27
    • 45

    Mostly Sunny

    • 27
    • 45

    Partly Sunny

    • 29
    • 47

    Mostly Cloudy

    • 30
    • 52

    Slight Chance Rain/Snow

Today 21 Oct Dawson

A slight chance of rain. Lows around 30. Highs around 50.

Tonight 21 Oct Dawson

Mostly clear. Lows in the lower 40s. Southeast wind 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Longs Reservoir Temperature Statistics

October Temperature

Glendive, Dawson Community Airport (36 miles)

  • Lowest 16 October, 2026

    21.9 °F

  • Average October

    51.2 °F

  • Highest 5 October, 2026

    82.9 °F

Climate (2021–2026)

Glendive, Dawson Community Airport (36 miles)

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  • Average Low 2021–2026

    34.1 °F

  • Average 2021–2026

    45.5 °F

  • Average High 2021–2026

    57 °F
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