Sumner Weather Forecast

    • 69
    • 92

    Patchy Smoke

    • 65
    • 84

    Partly Sunny

    • 66
    • 84

    Mostly Sunny

    • 67
    • 84

    Chance Thunderstorms

    • 64
    • 81

    Chance Rain Showers

    • 63
    • 82

    Mostly Sunny

Today 27 Jul Bremer

Sunny. Patchy smoke in the afternoon. Humid with Highs in the lower 90s. Southwest Winds 5 to 10 Mph, becoming west 10 to 15 Mph in the afternoon. Heat index Values up to 111 in the afternoon.

Tonight 27 Jul Bremer

Partly cloudy. Patchy smoke. Humid with Lows in the upper 60s. North Winds 10 to 15 Mph. Heat index Values up to 108 early in the evening.

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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

    38.6 °F

  • Average 2021–2026

    48.4 °F

  • Average High 2021–2026

    58.1 °F
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