Long Tom Reservoir Weather Forecast

    • 42
    • 72

    Becoming Sunny

    • 41
    • 71

    Increasing Clouds

    • 39
    • 71

    Mostly Sunny

    • 48
    • 82

    Mostly Sunny

    • 45
    • 79

    Mostly Sunny

    • 48
    • 86

    Partly Sunny

    • 44
    • 79

    Mostly Sunny

Today 7 May Boise Mountains

Sunny. Highs 62 to 77. Breezy.

Tonight 7 May Boise Mountains

Mostly clear. Lows 32 to 47.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Long Tom Reservoir Temperature Statistics

May Temperature

Mountain Home Air Force Base (21.7 miles)

  • Lowest 1 May, 2026

    38.6 °F

  • Average May

    64.4 °F

  • Highest 4 May, 2026

    82.7 °F

Climate (2021–Present)

Mountain Home Air Force Base (21.7 miles)

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  • Average Low 2021–2026

    40.1 °F

  • Average 2021–2026

    52.6 °F

  • Average High 2021–2026

    65.4 °F
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