Sumner Weather Forecast

    • 34
    • 54

    Slight Chance Rain Showers

    • 32
    • 53

    Partly Sunny

    • 42
    • 60

    Partly Sunny

    • 43
    • 67

    Chance Rain Showers

    • 40
    • 65

    Mostly Sunny

    • 45
    • 67

    Partly Sunny

Today 30 Apr Bremer

Partly sunny. A slight chance of Showers in the morning. Highs in the mid 50s. North Winds 10 to 15 Mph. Chance of rain 20 percent.

Tonight 30 Apr Bremer

Partly cloudy in the Evening, then becoming mostly clear. Lows in the mid 30s. North Winds 10 to 15 Mph, becoming northwest around 5 Mph after midnight.

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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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