Old Tom Mountain Weather Forecast

    • 51
    • 73

    Slight Chance Thunderstorms

    • 51
    • 75

    Partly Sunny

    • 46
    • 68

    Rain Likely

    • 42
    • 56

    Rain Showers Likely

    • 43
    • 62

    Partly Sunny

    • 47
    • 66

    Partly Sunny

Today 27 May Marsh and Arbon Highlands

Sunny. A slight chance of dry Thunderstorms in the afternoon. Highs 74 to 84.

Tonight 27 May Marsh and Arbon Highlands

Mostly clear. Lows 45 to 55.

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Old Tom Mountain Temperature Statistics

May Temperature

Pocatello, Pocatello Regional Airport (23.6 miles)

  • Lowest 19 May, 2026

    23.6 °F

  • Average May

    56.4 °F

  • Highest 12 May, 2026

    89.7 °F

Climate (2021–Present)

Pocatello, Pocatello Regional Airport (23.6 miles)

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  • Average Low 2021–2026

    35.3 °F

  • Average 2021–2026

    48.9 °F

  • Average High 2021–2026

    61.9 °F
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