Sumner Weather Forecast

    • 42
    • 68

    Rain Showers

    • 41
    • 58

    Mostly Cloudy

    • 41
    • 60

    Partly Sunny

    • 38
    • 59

    Slight Chance Rain Showers

    • 38
    • 58

    Mostly Sunny

    • 44
    • 63

    Partly Sunny

Today 27 Apr Bremer

Showers. A chance of Thunderstorms in the Morning, then Thunderstorms likely in the afternoon. Highs in the upper 60s. South Winds around 20 Mph with Gusts up to 30 Mph. Chance of rain 90 percent.

Tonight 27 Apr Bremer

Mostly cloudy. A chance of Showers and Thunderstorms in the evening. Breezy with Lows in the lower 40s. West Winds 20 to 25 Mph with Gusts up to 35 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sumner Temperature Statistics

April Temperature

Oelwein Municipal Airport (12.4 miles)

  • Lowest 7 April, 2026

    23 °F

  • Average April

    47.1 °F

  • Highest 17 April, 2026

    80.6 °F

Climate (2021–Present)

Oelwein Municipal Airport (12.4 miles)

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  • Average Low 2021–2026

    38.7 °F

  • Average 2021–2026

    48.4 °F

  • Average High 2021–2026

    58.2 °F
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