Sumner Weather Forecast

    • 33
    • 47

    Increasing Clouds

    • 20
    • 46

    Breezy

    • 9
    • 23

    Blustery

    • 23
    • 28

    Snow Likely

    • 5
    • 31

    Chance Snow

    • -1
    • 12

    Mostly Cloudy

    • 1
    • 13

    Mostly Cloudy

Today 12 Jan Bremer

Sunny. Not as cool with Highs in the mid 40s. Southwest Winds 5 to 10 Mph.

Tonight 12 Jan Bremer

Sunny, then becoming partly cloudy this Evening, then becoming mostly cloudy. Lows in the lower 30s. Southwest Winds 10 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sumner Temperature Statistics

January Temperature

Oelwein Municipal Airport (12.4 miles)

  • Lowest 1 January, 2026

    8.6 °F

  • Average January

    27.9 °F

  • Highest 8 January, 2026

    42.8 °F

Climate (2021–Present)

Oelwein Municipal Airport (12.4 miles)

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  • Average Low 2021–2026

    38.5 °F

  • Average 2021–2026

    48.3 °F

  • Average High 2021–2026

    57.9 °F
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