Mattawa Weather Forecast

    • 39
    • 55

    Increasing Clouds

    • 37
    • 53

    Rain Showers

    • 36
    • 57

    Slight Chance Rain Showers

    • 39
    • 62

    Mostly Sunny

    • 44
    • 67

    Partly Sunny

    • 47
    • 70

    Partly Sunny

Today 31 Mar Moses Lake Area

Mostly sunny in the Morning, becoming mostly cloudy. Highs in the lower to mid 50s. East wind 5 to 10 Mph.

Tonight 31 Mar Moses Lake Area

Partly cloudy. Lows in the upper 20s to lower 30s. Northeast wind 5 to 10 Mph.

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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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