Threemile Reservoir Weather Forecast

    • 58
    • 85

    Slight Chance Thunderstorms

    • 59
    • 91

    Slight Chance Thunderstorms

    • 61
    • 96

    Mostly Sunny

    • 58
    • 94

    Partly Sunny

    • 50
    • 79

    Mostly Sunny

    • 48
    • 79

    Mostly Sunny

Today 17 Aug Northern Blaine County

Partly cloudy. Highs 80 to 85. West Winds 5 to 15 Mph.

Tonight 17 Aug Northern Blaine County

Mostly cloudy. Lows 55 to 60. West Winds up to 10 Mph.

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Threemile Reservoir Temperature Statistics

August Temperature

Havre, Havre City-County Airport (51.6 miles)

  • Lowest 8 August, 2025

    53.7 °F

  • Average August

    68.5 °F

  • Highest 13 August, 2025

    95.6 °F

Climate (2020–Present)

Havre, Havre City-County Airport (51.6 miles)

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  • Average Low 2020–2025

    32.1 °F

  • Average 2020–2025

    45.1 °F

  • Average High 2020–2025

    57.6 °F
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