Sumner Weather Forecast

    • 49
    • 62

    Rain Showers Likely

    • 52
    • 61

    Chance Rain Showers

    • 59
    • 74

    Slight Chance Rain Showers

    • 51
    • 76

    Chance Rain Showers

    • 42
    • 67

    Slight Chance Rain Showers

    • 39
    • 60

    Mostly Sunny

Today 14 Oct Bremer

Mostly cloudy. A chance of Showers this afternoon. Highs in the lower 60s. East Winds 5 to 10 Mph. Chance of rain 30 percent.

Tonight 14 Oct Bremer

Cloudy. A chance of Showers in the Evening, then Showers likely with a slight chance of Thunderstorms after midnight. Lows around 50. East Winds around 10 Mph. Chance of rain 60 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sumner Temperature Statistics

October Temperature

Oelwein Municipal Airport (12.4 miles)

  • Lowest 8 October, 2025

    39.2 °F

  • Average October

    62.3 °F

  • Highest 3 October, 2025

    86 °F

Climate (2020–Present)

Oelwein Municipal Airport (12.4 miles)

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  • Average Low 2020–2025

    38.5 °F

  • Average 2020–2025

    48.2 °F

  • Average High 2020–2025

    57.9 °F
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