Summerville Weather Forecast

    • 42
    • 65

    Breezy

    • 41
    • 63

    Breezy

    • 36
    • 60

    Chance Rain Showers

    • 35
    • 53

    Rain Showers Likely

    • 32
    • 51

    Rain Showers Likely

    • 29
    • 48

    Slight Chance Rain Showers

Today 11 Nov Grande Ronde Valley

Mostly sunny. Highs in the mid 60s. Windy. South wind 20 to 30 Mph.

Tonight 11 Nov Grande Ronde Valley

Mostly cloudy. Lows in the lower to mid 40s. Windy. South wind 20 to 30 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Summerville Temperature Statistics

November Temperature

La Grande/Union County Airport (13 miles)

  • Lowest 6 November, 2026

    21.9 °F

  • Average November

    42.5 °F

  • Highest 7 November, 2026

    62.1 °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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