Mattawa Weather Forecast

    • 63
    • 94

    Sunny

    • 62
    • 91

    Partly Sunny

    • 60
    • 89

    Mostly Sunny

    • 66
    • 93

    Partly Sunny

    • 67
    • 96

    Mostly Sunny

    • 67
    • 97

    Mostly Sunny

    • 66
    • 96

    Sunny

Today 10 Jul Moses Lake Area

Sunny. Highs in the upper 80s to lower 90s. Southwest wind 5 to 15 Mph with Gusts up to 20 Mph.

Tonight 10 Jul Moses Lake Area

Mostly clear. Lows in the upper 50s to lower 60s. Southwest wind 5 to 15 Mph with Gusts up to 20 Mph.

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Mattawa Temperature Statistics

July Temperature

Sunnyside Municipal Airport (28.6 miles)

  • Lowest 1 July, 2026

    44.6 °F

  • Average July

    71.7 °F

  • Highest 7 July, 2026

    97.3 °F

Climate (2021–2026)

Sunnyside Municipal Airport (28.6 miles)

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  • Average Low 2021–2026

    38.8 °F

  • Average 2021–2026

    51 °F

  • Average High 2021–2026

    62.9 °F
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