Sumner Weather Forecast

    • 33
    • 44

    Becoming Sunny

    • 43
    • 60

    Mostly Sunny

    • 37
    • 64

    Mostly Sunny

    • 30
    • 53

    Chance Rain

    • 27
    • 45

    Slight Chance Rain/Snow

    • 37
    • 52

    Mostly Cloudy

Today 7 Mar Bremer

Mostly cloudy in the Morning, then becoming mostly sunny. Cooler with Highs in the mid 40s. Northwest Winds 15 to 20 Mph.

Tonight 7 Mar Bremer

Mostly clear. Lows in the lower 30s. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sumner Temperature Statistics

March Temperature

Oelwein Municipal Airport (12.4 miles)

  • Lowest 1 March, 2026

    15.8 °F

  • Average March

    32.5 °F

  • Highest 4 March, 2026

    48.2 °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

    58.1 °F
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