Summerville Weather Forecast

    • 41
    • 59

    Rain Likely

    • 34
    • 47

    Rain

    • 31
    • 43

    Rain/Snow

    • 34
    • 48

    Chance Rain

    • 37
    • 54

    Slight Chance Rain

    • 40
    • 60

    Chance Rain/Snow

    • 30
    • 52

    Chance Rain/Snow

Today 3 Mar Grande Ronde Valley

Mostly sunny. Highs in the upper 50s. South wind 5 to 15 Mph. Gusts up to 30 Mph in the afternoon.

Tonight 3 Mar Grande Ronde Valley

Mostly cloudy. A 50 percent chance of rain overnight. Lows in the lower 40s. South wind 5 to 15 Mph. Gusts up to 30 Mph decreasing to 20 Mph overnight. Rainfall Amounts less than a tenth of an inch.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Summerville Temperature Statistics

March Temperature

La Grande/Union County Airport (13 miles)

  • Lowest 1 March, 2026

    32 °F

  • Average March

    43.4 °F

  • Highest 1 March, 2026

    55 °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

    50.6 °F

  • Average High 2021–2026

    62.8 °F
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