Sumner Weather Forecast

    • 50
    • 75

    Mostly Sunny

    • 48
    • 75

    Mostly Sunny

    • 51
    • 78

    Mostly Sunny

    • 53
    • 81

    Partly Sunny

    • 53
    • 79

    Partly Sunny

    • 49
    • 79

    Partly Sunny

Today 14 Sep Southern Oxford

Partly sunny. Isolated Showers this afternoon. Highs in the mid 70s. Light and variable Winds. Chance of rain 20 percent.

Tonight 14 Sep Southern Oxford

Mostly clear. Patchy fog after midnight. Lows in the upper 40s. Light and variable Winds.

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Sumner Temperature Statistics

September Temperature

Auburn-Lewiston (24.9 miles)

  • Lowest 9 September, 2025

    41 °F

  • Average September

    61.4 °F

  • Highest 6 September, 2025

    81 °F

Climate (2020–Present)

Auburn-Lewiston (24.9 miles)

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  • Average Low 2020–2025

    37.9 °F

  • Average 2020–2025

    47.6 °F

  • Average High 2020–2025

    57.1 °F
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