Ottumwa Weather Forecast

    • 64
    • 83

    Decreasing Clouds

    • 66
    • 83

    Partly Sunny

    • 67
    • 85

    Rain Showers

    • 61
    • 80

    Mostly Cloudy

    • 62
    • 79

    Partly Sunny

    • 63
    • 81

    Partly Sunny

Today 16 Aug Wapello

Mostly cloudy. A slight chance of Showers in the morning. Patchy fog in the morning. Humid with Highs in the mid 80s. Northwest Winds 5 to 10 Mph. Chance of rain 20 percent.

Tonight 16 Aug Wapello

Mostly cloudy with a chance of Showers with a slight chance of Thunderstorms. Patchy fog. Near steady temperature in the lower 70s. West Winds around 5 Mph. Chance of rain 40 percent.

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Ottumwa Temperature Statistics

August Temperature

Ottumwa Regional Airport (5.6 miles)

  • Lowest 3 August, 2026

    58.6 °F

  • Average August

    75.6 °F

  • Highest 11 August, 2026

    90.6 °F

Climate (2021–2026)

Ottumwa Regional Airport (5.6 miles)

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  • Average Low 2021–2026

    42.1 °F

  • Average 2021–2026

    52.8 °F

  • Average High 2021–2026

    63.5 °F
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