Sumner Weather Forecast

    • 52
    • 69

    Slight Chance Thunderstorms

    • 61
    • 73

    Chance Thunderstorms

    • 58
    • 79

    Breezy

    • 58
    • 77

    Partly Sunny

    • 46
    • 69

    Chance Rain Showers

    • 42
    • 59

    Partly Sunny

Today 8 Oct Bremer

Partly cloudy. Highs around 70. North Winds around 5 Mph, becoming northwest this afternoon.

Tonight 8 Oct Bremer

Partly cloudy in the Evening, then mostly cloudy with a slight chance of Showers and Thunderstorms after midnight. Lows in the lower 50s. Southeast Winds around 5 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sumner Temperature Statistics

October Temperature

Oelwein Municipal Airport (12.4 miles)

  • Lowest 2 October, 2026

    42.8 °F

  • Average October

    57.6 °F

  • Highest 4 October, 2026

    71.6 °F

Climate (2021–2026)

Oelwein Municipal Airport (12.4 miles)

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  • Average Low 2021–2026

    38.5 °F

  • Average 2021–2026

    48.1 °F

  • Average High 2021–2026

    57.8 °F
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