Brewster Weather Forecast

    • 41
    • 52

    Slight Chance Rain

    • 38
    • 49

    Mostly Cloudy

    • 36
    • 47

    Mostly Cloudy

    • 36
    • 43

    Slight Chance Rain

    • 36
    • 46

    Chance Rain

    • 37
    • 43

    Rain Likely

Today 10 Dec Okanogan Valley

Mostly cloudy with a 20 percent chance of rain. Highs in the mid 40s to mid 50s. South wind 5 to 15 Mph in the afternoon. Gusts up to 25 Mph.

Tonight 10 Dec Okanogan Valley

Rain. Lows in the mid to upper 30s. Chance of precipitation near 100 percent. Rainfall Amounts less than a quarter of an inch.

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Brewster Temperature Statistics

December Temperature

Omak Airport (27.3 miles)

  • Lowest 1 December, 2025

    28.9 °F

  • Average December

    33.6 °F

  • Highest 7 December, 2025

    42.1 °F

Climate (2020–Present)

Omak Airport (27.3 miles)

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  • Average Low 2020–2025

    40.8 °F

  • Average 2020–2025

    51.8 °F

  • Average High 2020–2025

    62.8 °F
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