Sumner Weather Forecast

    • 65
    • 84

    Chance Thunderstorms

    • 75
    • 88

    Rain Showers Likely

    • 76
    • 94

    Breezy

    • 75
    • 94

    Chance Rain Showers

    • 68
    • 89

    Rain Showers

    • 66
    • 83

    Rain Showers

Today 19 Jun Bremer

Sunny. Highs in the mid 80s. West Winds 5 to 10 Mph.

Tonight 19 Jun Bremer

Mostly clear in the Evening, then partly cloudy with a chance of Showers and Thunderstorms after midnight. Lows in the mid 60s. South Winds around 10 Mph. Chance of rain 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sumner Temperature Statistics

June Temperature

Oelwein Municipal Airport (12.4 miles)

  • Lowest 10 June, 2025

    48.2 °F
  • Average June

    68.6 °F
  • Highest 11 June, 2025

    91.4 °F

Climate (2020–Present)

Oelwein Municipal Airport (12.4 miles)

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  • Average Low 2020–2025

    38.2 °F
  • Average 2020–2025

    48 °F
  • Average High 2020–2025

    57.7 °F
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