Whitman Mission National Historic Site Weather Forecast

    • 21
    • 34

    Patchy Fog

    • 21
    • 37

    Patchy Freezing Fog

    • 22
    • 33

    Mostly Cloudy

    • 27
    • 35

    Chance Rain

    • 33
    • 44

    Chance Rain

    • 34
    • 48

    Chance Rain

    • 35
    • 49

    Chance Rain

Today 29 Dec Foothills of the Blue Mountains of Washington

Partly sunny. Highs in the mid to upper 30s. Light wind.

Tonight 29 Dec Foothills of the Blue Mountains of Washington

Mostly cloudy. Patchy fog. Lows in the lower to mid 20s. Highs in the 30s.

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Whitman Mission National Historic Site Temperature Statistics

December Temperature

Walla Walla Regional Airport (9.3 miles)

  • Lowest 1 December, 2025

    27 °F

  • Average December

    46 °F

  • Highest 15 December, 2025

    68 °F

Climate (2020–Present)

Walla Walla Regional Airport (9.3 miles)

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  • Average Low 2020–2025

    45.4 °F

  • Average 2020–2025

    54.8 °F

  • Average High 2020–2025

    64.4 °F
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