Sumner Weather Forecast

    • 54
    • 72

    Rain Showers

    • 51
    • 72

    Partly Sunny

    • 56
    • 75

    Mostly Sunny

    • 60
    • 78

    Chance Thunderstorms

    • 55
    • 72

    Chance Thunderstorms

    • 55
    • 74

    Partly Sunny

Today 17 Jun Bremer

Cloudy with a chance of Showers with a slight chance of Thunderstorms late this Morning, then partly sunny with a chance of Showers and Thunderstorms this afternoon. Breezy with Highs in the mid 70s. Southeast Winds around 5 Mph, increasing to southwest 20 to 25 Mph with Gusts up to 35 Mph this afternoon. Chance of rain 50 percent.

Tonight 17 Jun Bremer

Mostly clear with a chance of Showers and Thunderstorms in the Evening, then mostly cloudy after midnight. Breezy with Lows in the mid 50s. Northwest Winds 15 to 25 Mph. Chance of rain 30 percent.

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  • Temperature Forecast NOAA

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Sumner Temperature Statistics

June Temperature

Oelwein Municipal Airport (12.4 miles)

  • Lowest 15 June, 2026

    48.2 °F

  • Average June

    69.7 °F

  • Highest 4 June, 2026

    86 °F

Climate (2021–2026)

Oelwein Municipal Airport (12.4 miles)

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  • Average Low 2021–2026

    38.8 °F

  • Average 2021–2026

    48.5 °F

  • Average High 2021–2026

    58.3 °F
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