Mattawa Weather Forecast

    • 62
    • 84

    Increasing Clouds

    • 60
    • 87

    Mostly Sunny

    • 61
    • 89

    Mostly Sunny

    • 58
    • 89

    Sunny

    • 61
    • 90

    Sunny

    • 63
    • 94

    Sunny

Today 17 Aug Moses Lake Area

Sunny. Highs in the lower 80s. Southwest wind 5 to 15 Mph.

Tonight 17 Aug Moses Lake Area

Mostly cloudy. Lows in the mid 50s to lower 60s. Southwest wind 5 to 10 Mph in the Evening, becoming light and variable.

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Mattawa Temperature Statistics

August 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

    38.9 °F

  • Average 2020–2025

    51.4 °F

  • Average High 2020–2025

    63.6 °F
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