Sumner Weather Forecast

    • 54
    • 74

    Severe Tstms

    • 61
    • 78

    Sunny

    • 53
    • 79

    Chance Thunderstorms

    • 51
    • 71

    Mostly Sunny

    • 51
    • 73

    Slight Chance Thunderstorms

    • 52
    • 72

    Partly Sunny

Today 11 Jun Bremer

Showers and Thunderstorms. Some Thunderstorms may be severe. Breezy. Near steady temperature in the lower 70s. Southeast Winds 10 to 15 Mph with Gusts up to 30 Mph, increasing to southwest 20 to 25 Mph with Gusts up to 45 Mph this afternoon. Chance of rain near 100 percent.

Tonight 11 Jun Bremer

Partly cloudy in the Evening, then clearing. Less humid with Lows in the mid 50s. West Winds 15 to 20 Mph with Gusts up to 35 Mph, Diminishing to around 10 Mph after midnight.

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  • Temperature Real-Time

Sumner Temperature Statistics

June Temperature

Oelwein Municipal Airport (12.4 miles)

  • Lowest 2 June, 2026

    53.6 °F

  • Average June

    71.5 °F

  • Highest 4 June, 2026

    86 °F

Climate (2021–Present)

Oelwein Municipal Airport (12.4 miles)

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  • Average Low 2021–2026

    38.7 °F

  • Average 2021–2026

    48.5 °F

  • Average High 2021–2026

    58.2 °F
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