Sumner Weather Forecast

    • 54
    • 75

    Increasing Clouds

    • 54
    • 68

    Rain Showers Likely

    • 54
    • 75

    Partly Sunny

    • 57
    • 75

    Chance Thunderstorms

    • 54
    • 75

    Slight Chance Thunderstorms

    • 55
    • 75

    Partly Sunny

Today 20 Jun Bremer

Sunny. Near steady temperature in the mid 70s. Northwest Winds around 10 Mph.

Tonight 20 Jun Bremer

Partly cloudy in the Evening, then mostly cloudy with a slight chance of Showers after midnight. Lows in the mid 50s. North Winds around 5 Mph, becoming east around 5 Mph after midnight. Chance of rain 20 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

    68.5 °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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