Summerville Weather Forecast

    • 46
    • 86

    Mostly Sunny

    • 45
    • 80

    Sunny

    • 49
    • 85

    Partly Sunny

    • 50
    • 90

    Partly Sunny

    • 45
    • 82

    Mostly Sunny

    • 46
    • 80

    Sunny

Today 16 Jun Grande Ronde Valley

Sunny. Highs in the upper 80s. Windy. Light Wind, becoming west 15 to 25 Mph in the afternoon.

Tonight 16 Jun Grande Ronde Valley

Clear. Lows in the mid to upper 40s. Windy. Northwest wind 15 to 25 Mph with Gusts to around 35 Mph decreasing to 5 to 10 Mph with Gusts to around 25 Mph overnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Summerville Temperature Statistics

June Temperature

La Grande/Union County Airport (13 miles)

  • Lowest 11 June, 2026

    36 °F

  • Average June

    58 °F

  • Highest 13 June, 2026

    81 °F

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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