Northwest Olympia Weather Forecast

    • 55
    • 68

    Rain

    • 55
    • 63

    Rain

    • 53
    • 67

    Mostly Cloudy

    • 50
    • 71

    Partly Sunny

    • 52
    • 78

    Sunny

    • 53
    • 80

    Mostly Sunny

    • 53
    • 81

    Mostly Sunny

Today 12 Sep Olympia and Southern Puget Sound

Mostly cloudy. Highs near 70. Light wind.

Tonight 12 Sep Olympia and Southern Puget Sound

A slight chance of Thunderstorms in the evening. Rain. Rainfall Amounts a quarter to a half inch Possible, except higher Amounts possible in Thunderstorms. Lows in the upper 40s to mid 50s. Southwest wind to 10 Mph increasing to 10 to 15 Mph after midnight.

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Northwest Olympia Temperature Statistics

September Temperature

Olympia, Olympia Airport (5.6 miles)

  • Lowest 8 September, 2026

    44.7 °F

  • Average September

    60.6 °F

  • Highest 9 September, 2026

    82 °F

Climate (2021–2026)

Olympia, Olympia Airport (5.6 miles)

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  • Average Low 2021–2026

    41.7 °F

  • Average 2021–2026

    51.9 °F

  • Average High 2021–2026

    62.2 °F
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