Sumner Weather Forecast

    • 54
    • 73

    Chance Rain Showers

    • 59
    • 77

    Mostly Sunny

    • 62
    • 80

    Slight Chance Thunderstorms

    • 64
    • 80

    Chance Rain Showers

    • 67
    • 82

    Chance Thunderstorms

    • 64
    • 82

    Chance Rain Showers

Today 5 Aug Bremer

Partly sunny. A chance of Showers with a slight chance of Thunderstorms in the morning. Highs in the lower 70s. North Winds around 5 Mph. Chance of rain 50 percent.

Tonight 5 Aug Bremer

Mostly clear. Lows in the mid 50s. North Winds around 5 Mph in the Evening, becoming light and variable.

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Sumner Temperature Statistics

August Temperature

Oelwein Municipal Airport (12.4 miles)

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  • Average August

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Climate (2021–2026)

Oelwein Municipal Airport (12.4 miles)

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  • Average Low 2021–2026

    38.5 °F

  • Average 2021–2026

    48.2 °F

  • Average High 2021–2026

    58 °F
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