Grant Lake Weather Forecast

    • 31
    • 34

    Rain

    • 32
    • 35

    Rain/Snow Likely

    • 23
    • 33

    Chance Snow

    • 23
    • 29

    Mostly Cloudy

    • 25
    • 31

    Mostly Cloudy

    • 25
    • 33

    Mostly Cloudy

Today 24 Dec Okanogan Valley

Freezing rain in the morning. Rain. Highs in the 30s. Gusts up to 20 Mph increasing to 30 Mph in the afternoon. Chance of precipitation near 100 percent.

Tonight 24 Dec Okanogan Valley

Partly cloudy. A chance of rain in the evening. Lows in the upper 20s to lower 30s. Gusts up to 20 Mph in the evening. Chance of precipitation 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grant Lake Temperature Statistics

December Temperature

Omak Airport (25.5 miles)

  • Lowest 20 December, 2025

    25 °F

  • Average December

    38 °F

  • Highest 9 December, 2025

    51.1 °F

Climate (2020–Present)

Omak Airport (25.5 miles)

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  • Average Low 2020–2025

    40.8 °F

  • Average 2020–2025

    51.9 °F

  • Average High 2020–2025

    62.9 °F
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