Mattawa Weather Forecast

    • 66
    • 99

    Areas Smoke

    • 64
    • 94

    Areas Smoke

    • 63
    • 92

    Mostly Sunny

    • 62
    • 91

    Sunny

    • 63
    • 92

    Mostly Sunny

    • 62
    • 90

    Mostly Sunny

    • 64
    • 89

    Mostly Sunny

Today 7 Aug Moses Lake Area

Sunny. Areas of smoke. Highs in the mid to upper 90s. Southwest wind 5 to 15 Mph with Gusts up to 20 Mph.

Tonight 7 Aug Moses Lake Area

Mostly clear. Patchy smoke in the Evening, then smoke overnight. Lows in the upper 50s to lower 60s. West wind 5 to 15 Mph with Gusts up to 25 Mph.

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Mattawa Temperature Statistics

August Temperature

Sunnyside Municipal Airport (28.6 miles)

  • Lowest 2 August, 2026

    44.8 °F

  • Average August

    67.1 °F

  • Highest 5 August, 2026

    91.9 °F

Climate (2021–2026)

Sunnyside Municipal Airport (28.6 miles)

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  • Average Low 2021–2026

    38.7 °F

  • Average 2021–2026

    51 °F

  • Average High 2021–2026

    63 °F
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