Mattawa Weather Forecast

    • 44
    • 61

    Increasing Clouds

    • 39
    • 61

    Partly Sunny

    • 38
    • 62

    Sunny

    • 43
    • 65

    Mostly Sunny

    • 44
    • 69

    Mostly Sunny

    • 45
    • 68

    Mostly Sunny

Today 10 Oct Moses Lake Area

Mostly sunny. Areas of frost in the morning. A chance of rain Showers in the afternoon. Highs in the mid 50s to lower 60s. West wind 5 to 10 Mph with Gusts up to 20 Mph. Chance of precipitation 20 percent.

Tonight 10 Oct Moses Lake Area

Partly cloudy. A chance of rain Showers in the evening. Lows in the upper 30s to lower 40s. Breezy. North wind 10 to 20 Mph. Gusts up to 25 Mph increasing to 35 Mph overnight. Chance of precipitation 20 percent.

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Mattawa Temperature Statistics

October Temperature

Sunnyside Municipal Airport (28.6 miles)

  • Lowest 7 October, 2026

    42.1 °F

  • Average October

    59.6 °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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