Pinnacle Airport Weather Forecast

    • 32
    • 44

    Mostly Cloudy

    • 38
    • 44

    Rain Likely

    • 40
    • 47

    Rain Likely

    • 35
    • 46

    Rain Likely

    • 34
    • 44

    Chance Rain/Snow

    • 32
    • 43

    Chance Rain/Snow

Today 31 Dec Southern Clearwater Mountains

Partly cloudy. Highs in the upper 30s to mid 40s.

Tonight 31 Dec Southern Clearwater Mountains

Mostly cloudy. Lows in the 20s to lower 30s.

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Pinnacle Airport Temperature Statistics

December Temperature

Grangeville - Idaho County Airport (11.2 miles)

  • Lowest 28 December, 2025

    12.2 °F

  • Average December

    38.9 °F

  • Highest 10 December, 2025

    55.4 °F

Climate (2020–Present)

Grangeville - Idaho County Airport (11.2 miles)

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  • Average Low 2020–2025

    36.9 °F

  • Average 2020–2025

    47.3 °F

  • Average High 2020–2025

    57.8 °F
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