Mattawa Weather Forecast

    • 36
    • 57

    Mostly Cloudy

    • 40
    • 58

    Mostly Cloudy

    • 38
    • 59

    Mostly Cloudy

    • 37
    • 60

    Mostly Cloudy

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    • 57

    Chance Rain Showers

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    • 53

    Partly Sunny

Today 24 Oct Moses Lake Area

Widespread frost in the morning. Mostly sunny. Highs in the mid to upper 50s. Light wind.

Tonight 24 Oct Moses Lake Area

Mostly cloudy. Lows in the 30s. Light Wind, becoming north 5 to 10 Mph overnight.

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Mattawa Temperature Statistics

October Temperature

Sunnyside Municipal Airport (28.6 miles)

  • Lowest 13 October, 2026

    30.6 °F

  • Average October

    53.3 °F

  • Highest 5 October, 2026

    81.7 °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

    63.1 °F
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