Yelm Weather Forecast

    • 49
    • 71

    Mostly Sunny

    • 53
    • 86

    Mostly Sunny

    • 52
    • 78

    Mostly Sunny

    • 52
    • 74

    Partly Sunny

    • 53
    • 77

    Partly Sunny

    • 54
    • 77

    Chance Rain

Today 15 Sep Olympia and Southern Puget Sound

Mostly sunny. Highs in the mid 60s to lower 70s. Light wind becoming northeast to 10 Mph in the afternoon.

Tonight 15 Sep Olympia and Southern Puget Sound

Mostly clear. Lows near 50. Northeast wind 10 to 15 Mph.

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Yelm Temperature Statistics

September Temperature

Fort Lewis / Gray U. S. Army Airfield (11.8 miles)

  • Lowest 13 September, 2025

    49.1 °F

  • Average September

    65 °F

  • Highest 3 September, 2025

    85.8 °F

Climate (2020–Present)

Fort Lewis / Gray U. S. Army Airfield (11.8 miles)

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  • Average Low 2020–2025

    42.7 °F

  • Average 2020–2025

    51.9 °F

  • Average High 2020–2025

    61.2 °F
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