Mattawa Weather Forecast

    • 33
    • 38

    Rain/Freezing Rain Likely

    • 31
    • 42

    Rain/Freezing Rain Likely

    • 26
    • 43

    Partly Sunny

    • 24
    • 39

    Chance Snow

    • 22
    • 35

    Chance Snow

    • 18
    • 31

    Chance Snow

Today 30 Jan Moses Lake Area

Partly sunny. Highs in the mid 30s to lower 40s. Light Wind, becoming southeast 5 to 10 Mph in the afternoon.

Tonight 30 Jan Moses Lake Area

Cloudy. A chance of rain or snow overnight. Lows in the upper 20s to lower 30s. Light Wind, becoming southeast 5 to 10 Mph overnight. Chance of precipitation 50 percent.

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Mattawa Temperature Statistics

January Temperature

Sunnyside Municipal Airport (28.6 miles)

  • Lowest 28 January, 2025

    15.6 °F

  • Average January

    31.9 °F

  • Highest 11 January, 2025

    51.4 °F

Climate (2020–Present)

Sunnyside Municipal Airport (28.6 miles)

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  • Average Low 2020–2025

    39.5 °F

  • Average 2020–2025

    52.3 °F

  • Average High 2020–2025

    64.7 °F
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