Sumner Weather Forecast

    • 36
    • 68

    Rain Showers Likely

    • 37
    • 54

    Rain Showers

    • 36
    • 55

    Mostly Sunny

    • 51
    • 60

    Rain Showers Likely

    • 60
    • 71

    Rain Showers Likely

    • 45
    • 75

    Rain Showers Likely

Today 8 Apr Bremer

Showers likely with a slight chance of Thunderstorms. Windy and not as cool with Highs in the upper 60s. Southwest Winds 20 to 30 Mph with Gusts up to 45 Mph. Chance of rain 60 percent.

Tonight 8 Apr Bremer

Mostly cloudy with Showers likely with a slight chance of Thunderstorms in the Evening, then mostly clear after midnight. Lows in the mid 30s. West Winds 15 to 20 Mph with Gusts up to 30 Mph, Diminishing to 5 to 10 Mph after midnight. Chance of rain 60 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Sumner Temperature Statistics

April Temperature

Oelwein Municipal Airport (12.4 miles)

  • Lowest 5 April, 2026

    32 °F

  • Average April

    40.2 °F

  • Highest 5 April, 2026

    53.6 °F

Climate (2021–Present)

Oelwein Municipal Airport (12.4 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    38.6 °F

  • Average 2021–2026

    48.4 °F

  • Average High 2021–2026

    58.1 °F
Get WillyWeather+ to remove ads