Sumner Weather Forecast

    • 50
    • 62

    Mostly Cloudy

    • 43
    • 58

    Rain Showers

    • 32
    • 54

    Breezy

    • 42
    • 58

    Mostly Sunny

    • 47
    • 63

    Mostly Cloudy

    • 47
    • 66

    Partly Sunny

Today 14 Oct Bremer

Mostly cloudy this Morning, then becoming partly sunny. Highs in the lower 60s. North Winds around 10 Mph.

Tonight 14 Oct Bremer

Mostly cloudy. A chance of Showers after midnight. Lows around 50. East Winds 5 to 10 Mph. Chance of rain 40 percent.

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Sumner Temperature Statistics

October Temperature

Oelwein Municipal Airport (12.4 miles)

  • Lowest 2 October, 2026

    42.8 °F

  • Average October

    60.9 °F

  • Highest 11 October, 2026

    86 °F

Climate (2021–2026)

Oelwein Municipal Airport (12.4 miles)

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  • Average Low 2021–2026

    38.4 °F

  • Average 2021–2026

    48.1 °F

  • Average High 2021–2026

    57.8 °F
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