Threemile Reservoir Weather Forecast

    • 47
    • 75

    Increasing Clouds

    • 53
    • 78

    Increasing Clouds

    • 45
    • 71

    Rain Showers Likely

    • 44
    • 71

    Slight Chance Thunderstorms

    • 44
    • 72

    Mostly Sunny

    • 48
    • 78

    Mostly Sunny

    • 49
    • 80

    Mostly Sunny

Today 18 Jun Beaverhead/Lemhi Highlands

Sunny. Highs 72 to 81.

Tonight 18 Jun Beaverhead/Lemhi Highlands

Partly cloudy. Lows 43 to 53.

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  • Temperature Real-Time

Threemile Reservoir Temperature Statistics

June Temperature

Rexburg, Rexburg-Madison County Airport (40.4 miles)

  • Lowest 11 June, 2026

    34.6 °F

  • Average June

    59.7 °F

  • Highest 16 June, 2026

    86 °F

Climate (2021–2026)

Rexburg, Rexburg-Madison County Airport (40.4 miles)

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  • Average Low 2021–2026

    34.3 °F

  • Average 2021–2026

    46.4 °F

  • Average High 2021–2026

    58.5 °F
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