Summerville Weather Forecast

    • 32
    • 57

    Increasing Clouds

    • 29
    • 53

    Chance Rain Showers

    • 36
    • 55

    Mostly Cloudy

    • 41
    • 61

    Breezy

    • 35
    • 59

    Mostly Cloudy

    • 36
    • 59

    Mostly Cloudy

Today 4 Nov Grande Ronde Valley

Sunny. Patchy freezing fog in the morning. Highs in the upper 50s. Light wind.

Tonight 4 Nov Grande Ronde Valley

Mostly cloudy. A 20 percent chance of rain Showers overnight. Lows in the lower to mid 30s. Light wind.

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Summerville Temperature Statistics

November Temperature

La Grande/Union County Airport (13 miles)

  • Lowest 1 November, 2026

    34 °F

  • Average November

    42.2 °F

  • Highest 1 November, 2026

    48 °F

Climate (2021–2026)

La Grande/Union County Airport (13 miles)

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  • Average Low 2021–2026

    38.2 °F

  • Average 2021–2026

    50.6 °F

  • Average High 2021–2026

    62.8 °F
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