Tumwater Weather Forecast

    • 32
    • 47

    Decreasing Clouds

    • 32
    • 47

    Partly Sunny

    • 33
    • 48

    Partly Sunny

    • 35
    • 47

    Mostly Cloudy

    • 39
    • 46

    Chance Rain

    • 35
    • 46

    Rain/Snow Likely

Today 18 Jan Olympia and Southern Puget Sound

Mostly sunny. Patchy dense fog in the morning. Highs in the mid 40s to lower 50s. Light wind.

Tonight 18 Jan Olympia and Southern Puget Sound

Partly cloudy. Patchy dense fog after midnight. Lows in the lower to mid 30s. Light wind.

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Tumwater Temperature Statistics

January Temperature

Olympia, Olympia Airport (1.9 miles)

  • Lowest 1 January, 2026

    30.9 °F

  • Average January

    43.8 °F

  • Highest 13 January, 2026

    57 °F

Climate (2021–Present)

Olympia, Olympia Airport (1.9 miles)

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  • Average Low 2021–2026

    41.7 °F

  • Average 2021–2026

    51.7 °F

  • Average High 2021–2026

    62.1 °F
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