Sumner Weather Forecast

    • 37
    • 61

    Increasing Clouds

    • 44
    • 67

    Partly Sunny

    • 45
    • 74

    Chance Rain Showers

    • 38
    • 62

    Mostly Sunny

    • 47
    • 67

    Chance Rain Showers

    • 47
    • 72

    Partly Sunny

Today 7 May Bremer

Mostly sunny. Highs in the lower 60s. Southwest Winds 5 to 10 Mph, becoming west 10 to 15 Mph in the afternoon.

Tonight 7 May Bremer

Mostly cloudy. Near steady temperature in the upper 30s. South Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sumner Temperature Statistics

May Temperature

Oelwein Municipal Airport (12.4 miles)

  • Lowest 2 May, 2026

    32 °F

  • Average May

    53.4 °F

  • Highest 4 May, 2026

    78.8 °F

Climate (2021–Present)

Oelwein Municipal Airport (12.4 miles)

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  • Average Low 2021–2026

    38.7 °F

  • Average 2021–2026

    48.4 °F

  • Average High 2021–2026

    58.2 °F
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