Summerville Weather Forecast

    • 31
    • 51

    Rain

    • 21
    • 43

    Chance Snow

    • 31
    • 43

    Rain/Snow Likely

    • 33
    • 43

    Rain Likely

    • 32
    • 49

    Chance Rain

    • 29
    • 47

    Rain/Snow Likely

Today 23 Nov Grande Ronde Valley

Mostly cloudy. A 20 percent chance of rain in the afternoon. Highs in the lower 50s. South wind 5 to 15 Mph.

Tonight 23 Nov Grande Ronde Valley

A chance of rain in the Evening, then rain overnight. Lows in the lower 30s. Southwest wind 5 to 15 Mph. Gusts up to 25 Mph overnight. Chance of precipitation 90 percent. Rainfall Amounts up to a half of an inch possible.

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Summerville Temperature Statistics

November Temperature

La Grande/Union County Airport (13 miles)

  • Lowest 8 November, 2025

    24.1 °F

  • Average November

    48.2 °F

  • Highest 1 November, 2025

    66.9 °F

Climate (2020–Present)

La Grande/Union County Airport (13 miles)

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  • Average Low 2020–2025

    38 °F

  • Average 2020–2025

    50.3 °F

  • Average High 2020–2025

    62.4 °F
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