Mattawa Weather Forecast

    • 61
    • 93

    Mostly Sunny

    • 56
    • 88

    Mostly Sunny

    • 59
    • 88

    Mostly Sunny

    • 60
    • 91

    Mostly Sunny

    • 63
    • 95

    Mostly Sunny

    • 61
    • 96

    Mostly Sunny

Today 19 Jun Moses Lake Area

Sunny. Highs in the mid 80s to lower 90s. East wind 5 to 10 Mph.

Tonight 19 Jun Moses Lake Area

Mostly clear. Lows in the mid 50s to lower 60s. Southwest wind 5 to 10 Mph. Gusts up to 20 Mph overnight.

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Mattawa Temperature Statistics

June Temperature

Sunnyside Municipal Airport (28.6 miles)

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Climate (2021–2026)

Sunnyside Municipal Airport (28.6 miles)

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  • Average Low 2021–2026

    38.9 °F
  • Average 2021–2026

    51.1 °F
  • Average High 2021–2026

    63.1 °F
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