Sunnyside State Wildlife Recreation Area Weather Forecast

    • 49
    • 77

    Sunny

    • 50
    • 79

    Partly Sunny

    • 50
    • 80

    Mostly Sunny

    • 50
    • 81

    Mostly Sunny

    • 51
    • 82

    Mostly Sunny

    • 50
    • 82

    Mostly Sunny

    • 48
    • 77

    Mostly Sunny

Today 16 Sep Yakima Valley

Sunny. Highs in the lower to mid 70s. Northeast wind 5 to 15 Mph.

Tonight 16 Sep Yakima Valley

Clear. Lows in the upper 40s to mid 50s. North wind 5 to 10 Mph with Gusts to around 20 Mph in the Evening, becoming light.

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Sunnyside State Wildlife Recreation Area Temperature Statistics

September Temperature

Sunnyside Municipal Airport (6.2 miles)

  • Lowest 14 September, 2026

    42.4 °F

  • Average September

    60.5 °F

  • Highest 1 September, 2026

    85.5 °F

Climate (2021–2026)

Sunnyside Municipal Airport (6.2 miles)

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  • Average Low 2021–2026

    38.8 °F

  • Average 2021–2026

    51 °F

  • Average High 2021–2026

    63 °F
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