Summerville Weather Forecast

    • 35
    • 54

    Rain

    • 25
    • 46

    Rain/Snow

    • 37
    • 47

    Rain Likely

    • 41
    • 59

    Chance Rain

    • 44
    • 67

    Chance Rain

    • 46
    • 71

    Mostly Cloudy

    • 47
    • 72

    Mostly Cloudy

Today 13 Mar Grande Ronde Valley

Rain likely in the Morning, then rain in the afternoon. Highs in the mid to upper 50s. South wind 5 to 15 Mph with Gusts to around 30 Mph. Chance of precipitation 90 percent. Rainfall Amounts less than a quarter of an inch.

Tonight 13 Mar Grande Ronde Valley

Rain. Lows in the mid to upper 30s. South wind 5 to 15 Mph. Chance of precipitation near 100 percent. Rainfall Amounts up to a half of an inch possible.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Summerville Temperature Statistics

March Temperature

La Grande/Union County Airport (13 miles)

  • Lowest 3 March, 2026

    21.9 °F

  • Average March

    42.7 °F

  • Highest 7 March, 2026

    64 °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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