Sumner Weather Forecast

    • 61
    • 77

    Rain Showers Likely

    • 56
    • 79

    Chance Thunderstorms

    • 56
    • 76

    Partly Sunny

    • 60
    • 76

    Partly Sunny

    • 67
    • 80

    Chance Rain Showers

    • 73
    • 87

    Breezy

Today 23 Jun Bremer

Partly sunny with a slight chance of Showers and Thunderstorms. Near steady temperature in the upper 70s. Southwest Winds 5 to 10 Mph. Chance of rain 20 percent.

Tonight 23 Jun Bremer

Mostly cloudy. A slight chance of Showers and Thunderstorms early. A chance of Showers and Thunderstorms after midnight. Lows in the lower 60s. South Winds 5 to 10 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sumner Temperature Statistics

June Temperature

Oelwein Municipal Airport (12.4 miles)

  • Lowest 15 June, 2026

    48.2 °F

  • Average June

    67.8 °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

    48.6 °F

  • Average High 2021–2026

    58.3 °F
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