Sumner Weather Forecast

    • 63
    • 84

    Sunny

    • 65
    • 85

    Sunny

    • 67
    • 88

    Sunny

    • 68
    • 89

    Sunny

    • 69
    • 90

    Mostly Sunny

    • 70
    • 88

    Partly Sunny

    • 70
    • 89

    Partly Sunny

Today 11 Jul Bremer

Sunny. Near steady temperature in the mid 80s. East Winds around 5 Mph.

Tonight 11 Jul Bremer

Clear. Lows in the lower 60s. Southeast Winds around 5 Mph this Evening, becoming light and variable.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sumner Temperature Statistics

July Temperature

Oelwein Municipal Airport (12.4 miles)

  • Lowest 6 July, 2026

    64.4 °F

  • Average July

    74.7 °F

  • Highest 1 July, 2026

    87.8 °F

Climate (2021–2026)

Oelwein Municipal Airport (12.4 miles)

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  • Average Low 2021–2026

    38.8 °F

  • Average 2021–2026

    48.6 °F

  • Average High 2021–2026

    58.3 °F
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