Ottumwa Junction Weather Forecast

    • 63
    • 88

    Rain Showers Likely

    • 59
    • 81

    Rain Showers Likely

    • 62
    • 84

    Chance Rain Showers

    • 62
    • 84

    Chance Rain Showers

    • 59
    • 83

    Chance Rain Showers

    • 55
    • 80

    Slight Chance Rain Showers

Today 18 Sep Wapello

Partly sunny with a chance of Showers. A slight chance of Thunderstorms in the Morning, then a chance of Thunderstorms in the afternoon. Highs in the upper 80s. South Winds around 5 Mph. Chance of rain 30 percent.

Tonight 18 Sep Wapello

Mostly cloudy. A chance of Showers and Thunderstorms in the Evening, then Showers likely with a slight chance of Thunderstorms after midnight. Humid with Lows in the lower 60s. South Winds around 5 Mph. Chance of rain 70 percent.

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Ottumwa Junction Temperature Statistics

September Temperature

Ottumwa Regional Airport (3.1 miles)

  • Lowest 7 September, 2025

    41 °F

  • Average September

    67 °F

  • Highest 13 September, 2025

    96.1 °F

Climate (2020–Present)

Ottumwa Regional Airport (3.1 miles)

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  • Average Low 2020–2025

    41.8 °F

  • Average 2020–2025

    52.2 °F

  • Average High 2020–2025

    62.6 °F
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