Sumner Weather Forecast

    • 63
    • 75

    Increasing Clouds

    • 70
    • 87

    Partly Sunny

    • 74
    • 90

    Chance Thunderstorms

    • 69
    • 91

    Mostly Sunny

    • 66
    • 86

    Partly Sunny

    • 66
    • 86

    Slight Chance Thunderstorms

Today 24 Jul Bremer

Partly sunny. Highs in the mid 70s. South Winds 10 to 15 Mph.

Tonight 24 Jul Bremer

Mostly cloudy. Lows in the lower 60s. South Winds 10 to 15 Mph.

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  • 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

    38.7 °F

  • Average 2021–2026

    48.4 °F

  • Average High 2021–2026

    58.2 °F
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