Summerville Weather Forecast

    • 35
    • 53

    Mostly Cloudy

    • 35
    • 55

    Partly Sunny

    • 35
    • 56

    Mostly Sunny

    • 33
    • 56

    Partly Sunny

    • 39
    • 55

    Chance Rain

    • 34
    • 49

    Rain Likely

Today 3 Feb Grande Ronde Valley

Sunny in the Morning, becoming partly sunny. Patchy fog in the morning. Highs in the mid 50s. Southeast wind 5 to 10 Mph.

Tonight 3 Feb Grande Ronde Valley

Mostly cloudy. Lows in the mid to upper 30s. Southeast wind 5 to 10 Mph.

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Summerville Temperature Statistics

February Temperature

La Grande/Union County Airport (13 miles)

  • Lowest 1 February, 2026

    28 °F
  • Average February

    44.4 °F
  • Highest 1 February, 2026

    54 °F

Climate (2021–Present)

La Grande/Union County Airport (13 miles)

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  • Average Low 2021–2026

    38.2 °F
  • Average 2021–2026

    50.5 °F
  • Average High 2021–2026

    62.6 °F
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