Sumner Weather Forecast

    • 63
    • 82

    Mostly Sunny

    • 62
    • 82

    Mostly Sunny

    • 64
    • 83

    Partly Sunny

    • 67
    • 84

    Rain Showers Likely

    • 63
    • 80

    Chance Rain Showers

    • 62
    • 80

    Slight Chance Thunderstorms

    • 63
    • 82

    Partly Sunny

Today 5 Jul Bremer

Mostly sunny. Near steady temperature in the lower 80s. Northeast Winds around 5 Mph.

Tonight 5 Jul Bremer

Mostly clear. Lows in the lower 60s. Northeast Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sumner Temperature Statistics

July Temperature

Oelwein Municipal Airport (12.4 miles)

  • Lowest 3 July, 2026

    66.2 °F

  • Average July

    75.5 °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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