Whitman Mission National Historic Site Weather Forecast

    • 35
    • 43

    Rain

    • 33
    • 52

    Mostly Cloudy

    • 34
    • 46

    Rain

    • 29
    • 47

    Chance Rain

    • 31
    • 43

    Rain Likely

    • 28
    • 43

    Slight Chance Rain/Snow

    • 29
    • 44

    Mostly Cloudy

Today 21 Dec Foothills of the Blue Mountains of Washington

Cloudy. A chance of rain in the Morning, then rain likely in the afternoon. Highs in the lower to mid 40s. South wind 5 to 10 Mph. Chance of precipitation 70 percent. Rainfall Amounts less than a tenth of an inch.

Tonight 21 Dec Foothills of the Blue Mountains of Washington

Rain likely in the Evening, then rain overnight. Lows in the lower to mid 30s. South wind 5 to 15 Mph. Gusts up to 25 Mph overnight. Chance of precipitation 90 percent. Rainfall Amounts less than a quarter of an inch.

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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

    48.6 °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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