McMannaman Lake Weather Forecast

    • 32
    • 60

    Mostly Sunny

    • 37
    • 62

    Partly Sunny

    • 35
    • 64

    Mostly Sunny

    • 42
    • 61

    Chance Rain Showers

    • 36
    • 60

    Chance Rain Showers

    • 35
    • 58

    Partly Sunny

Today 15 Oct Moses Lake Area

Sunny. Highs in the upper 50s to lower 60s. Light Wind, becoming west 5 to 10 Mph in the afternoon.

Tonight 15 Oct Moses Lake Area

Mostly clear. Areas of frost overnight. Lows in the 30s. South wind 5 to 10 Mph in the Evening, becoming light and variable.

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McMannaman Lake Temperature Statistics

October Temperature

Grant County Airport (19.9 miles)

  • Lowest 6 October, 2025

    35.1 °F

  • Average October

    54.9 °F

  • Highest 8 October, 2025

    73 °F

Climate (2020–Present)

Grant County Airport (19.9 miles)

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  • Average Low 2020–2025

    40.9 °F

  • Average 2020–2025

    52.7 °F

  • Average High 2020–2025

    64.2 °F
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