Sunnyside Wildlife Recreation Area Weather Forecast

    • 54
    • 86

    Partly Sunny

    • 50
    • 80

    Partly Sunny

    • 50
    • 75

    Partly Sunny

    • 50
    • 72

    Chance Rain Showers

    • 44
    • 67

    Slight Chance Rain Showers

    • 43
    • 64

    Partly Sunny

Today 21 Sep Yakima Valley

Sunny in the Morning, becoming partly cloudy. Highs in the lower to mid 80s. Light wind.

Tonight 21 Sep Yakima Valley

Partly cloudy. Lows in the lower to mid 50s. Light Wind, becoming northwest 5 to 10 Mph with Gusts to around 20 Mph overnight.

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Sunnyside Wildlife Recreation Area Temperature Statistics

September Temperature

Sunnyside Municipal Airport (9.3 miles)

  • Lowest 14 September, 2026

    42.4 °F

  • Average September

    60.7 °F

  • Highest 1 September, 2026

    85.5 °F

Climate (2021–2026)

Sunnyside Municipal Airport (9.3 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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