Pomeroy Weather Forecast

    • 36
    • 50

    Rain

    • 32
    • 42

    Chance Rain/Snow

    • 30
    • 42

    Chance Rain/Snow

    • 35
    • 43

    Chance Rain

    • 32
    • 43

    Chance Rain

    • 33
    • 43

    Chance Rain/Snow

Today 18 Dec Lower Garfield and Asotin Counties

A chance of rain or snow in the Morning, then rain or snow in the afternoon. Snow accumulation up to 1 inch. Snow level 2500 feet in the morning. Highs in the mid 40s to lower 50s. Southeast wind 5 to 15 Mph in the afternoon. Gusts up to 25 Mph. Chance of precipitation near 100 percent.

Tonight 18 Dec Lower Garfield and Asotin Counties

Rain. Lows in the mid to upper 30s. Windy. Southwest wind 15 to 25 Mph with Gusts up to 45 Mph. Chance of precipitation near 100 percent. Rainfall Amounts over an inch possible.

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Pomeroy Temperature Statistics

December Temperature

Lewiston, Lewiston-Nez Perce County Airport (28.6 miles)

  • Lowest 1 December, 2025

    28 °F

  • Average December

    46.1 °F

  • Highest 10 December, 2025

    64.9 °F

Climate (2020–Present)

Lewiston, Lewiston-Nez Perce County Airport (28.6 miles)

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  • Average Low 2020–2025

    45.7 °F

  • Average 2020–2025

    55.7 °F

  • Average High 2020–2025

    66 °F
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