Lake Sacajawea Weather Forecast

    • 43
    • 53

    Mostly Cloudy

    • 44
    • 62

    Rain Likely

    • 43
    • 59

    Rain

    • 37
    • 53

    Chance Rain

    • 41
    • 49

    Rain

    • 34
    • 50

    Chance Rain

    • 34
    • 47

    Chance Rain

Today 14 Dec Lower Columbia Basin of Washington

Mostly cloudy. Patchy fog in the morning. Highs in the lower to mid 50s. South wind 5 to 10 Mph.

Tonight 14 Dec Lower Columbia Basin of Washington

Mostly cloudy. A 20 percent chance of rain overnight. Lows in the lower to mid 40s. Southeast wind 5 to 10 Mph.

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  • Temperature Real-Time

Lake Sacajawea Temperature Statistics

December Temperature

Tri-Cities Airport (18.6 miles)

  • Lowest 1 December, 2025

    24.1 °F

  • Average December

    47.2 °F

  • Highest 10 December, 2025

    66.9 °F

Climate (2020–Present)

Tri-Cities Airport (18.6 miles)

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  • Average Low 2020–2025

    43 °F

  • Average 2020–2025

    55.6 °F

  • Average High 2020–2025

    68 °F
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