Summerville Weather Forecast

    • 45
    • 74

    Mostly Sunny

    • 48
    • 78

    Mostly Sunny

    • 44
    • 73

    Partly Sunny

    • 41
    • 70

    Partly Sunny

    • 40
    • 71

    Mostly Sunny

    • 45
    • 80

    Partly Sunny

    • 45
    • 82

    Partly Sunny

Today 5 May Grande Ronde Valley

Partly cloudy. Highs in the mid 70s. Breezy. North wind 10 to 20 Mph with Gusts to around 30 Mph.

Tonight 5 May Grande Ronde Valley

Mostly clear. Lows in the mid to upper 40s. North wind 5 to 15 Mph with Gusts to around 30 Mph in the Evening, becoming light.

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Summerville Temperature Statistics

May Temperature

La Grande/Union County Airport (13 miles)

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Climate (2021–Present)

La Grande/Union County Airport (13 miles)

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  • Average Low 2021–2026

    38.3 °F

  • Average 2021–2026

    50.7 °F

  • Average High 2021–2026

    62.8 °F
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