Mattawa Weather Forecast

    • 57
    • 82

    Sunny

    • 58
    • 89

    Sunny

    • 60
    • 89

    Mostly Sunny

    • 60
    • 90

    Partly Sunny

    • 58
    • 85

    Partly Sunny

    • 52
    • 79

    Mostly Sunny

Today 16 Sep Moses Lake Area

Sunny. Highs in the lower to mid 80s. East wind 5 to 15 Mph with Gusts up to 20 Mph.

Tonight 16 Sep Moses Lake Area

Mostly clear. Lows in the 50s. East wind 5 to 10 Mph. Gusts up to 20 Mph in the evening.

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Mattawa Temperature Statistics

September Temperature

Sunnyside Municipal Airport (28.6 miles)

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Climate (2020–Present)

Sunnyside Municipal Airport (28.6 miles)

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  • Average Low 2020–2025

    38.7 °F

  • Average 2020–2025

    51.1 °F

  • Average High 2020–2025

    63.3 °F
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