Mattawa Weather Forecast

    • 50
    • 70

    Mostly Cloudy

    • 52
    • 71

    Mostly Cloudy

    • 52
    • 74

    Mostly Cloudy

    • 45
    • 72

    Mostly Cloudy

    • 36
    • 60

    Partly Sunny

    • 37
    • 58

    Partly Sunny

Today 17 Mar Moses Lake Area

Mostly cloudy. Highs in the 60s. Breezy. Southwest wind 10 to 20 Mph with Gusts up to 30 Mph.

Tonight 17 Mar Moses Lake Area

Cloudy. A chance of rain. Lows in the upper 40s. South wind 5 to 15 Mph with Gusts up to 25 Mph. Chance of precipitation 50 percent. Rainfall Amounts less than a tenth of an inch.

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Mattawa Temperature Statistics

March Temperature

Sunnyside Municipal Airport (28.6 miles)

  • Lowest 10 March, 2026

    22.8 °F

  • Average March

    45.3 °F

  • Highest 7 March, 2026

    71.4 °F

Climate (2021–Present)

Sunnyside Municipal Airport (28.6 miles)

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  • Average Low 2021–2026

    39.1 °F

  • Average 2021–2026

    51.5 °F

  • Average High 2021–2026

    63.6 °F
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