Sumner Weather Forecast

    • 69
    • 87

    Chance Thunderstorms

    • 71
    • 88

    Mostly Sunny

    • 66
    • 86

    Rain Showers Likely

    • 62
    • 80

    Chance Rain Showers

    • 62
    • 80

    Slight Chance Thunderstorms

    • 64
    • 81

    Chance Thunderstorms

Today 3 Jul Bremer

Mostly sunny with a slight chance of Showers and Thunderstorms. Humid with Highs in the upper 80s. South Winds 5 to 10 Mph. Chance of rain 20 percent.

Tonight 3 Jul Bremer

Partly cloudy with a slight chance of Showers and Thunderstorms in the Evening, then mostly clear after midnight. Humid with Lows in the upper 60s. South Winds 5 to 10 Mph. Chance of rain 20 percent.

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Sumner Temperature Statistics

July Temperature

Oelwein Municipal Airport (12.4 miles)

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  • Average July

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Climate (2020–Present)

Oelwein Municipal Airport (12.4 miles)

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  • Average Low 2020–2025

    38.2 °F

  • Average 2020–2025

    48 °F

  • Average High 2020–2025

    57.8 °F
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