Sumner Weather Forecast

    • 29
    • 45

    Mostly Sunny

    • 37
    • 43

    Rain Showers

    • 34
    • 67

    Rain Showers Likely

    • 32
    • 53

    Partly Sunny

    • 36
    • 56

    Mostly Cloudy

    • 29
    • 53

    Partly Sunny

    • 24
    • 50

    Mostly Sunny

Today 31 Mar Bremer

Sunny. Highs in the mid 40s. North Winds 10 to 15 Mph.

Tonight 31 Mar Bremer

Mostly clear this Evening, then becoming partly cloudy. Lows in the upper 20s. North Winds 10 to 15 Mph, becoming east 5 to 10 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sumner Temperature Statistics

March Temperature

Oelwein Municipal Airport (12.4 miles)

  • Lowest 2 March, 2025

    10.4 °F

  • Average March

    41 °F

  • Highest 28 March, 2025

    82.4 °F

Climate (2020–Present)

Oelwein Municipal Airport (12.4 miles)

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  • Average Low 2020–2025

    38.2 °F

  • Average 2020–2025

    48 °F

  • Average High 2020–2025

    57.7 °F
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