Ottumwa Weather Forecast

    • 44
    • 70

    Becoming Sunny

    • 55
    • 74

    Mostly Sunny

    • 53
    • 83

    Slight Chance Rain Showers

    • 47
    • 75

    Mostly Sunny

    • 58
    • 79

    Chance Rain Showers

    • 63
    • 88

    Chance Thunderstorms

Today 10 May Wapello

Sunny. Highs in the upper 60s. Northwest Winds 5 to 10 Mph.

Tonight 10 May Wapello

Mostly clear. Lows in the mid 40s. West Winds 5 to 10 Mph, becoming northeast after midnight.

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Ottumwa Temperature Statistics

May Temperature

Ottumwa Regional Airport (5.6 miles)

  • Lowest 1 May, 2026

    34.6 °F

  • Average May

    54.5 °F

  • Highest 4 May, 2026

    84.7 °F

Climate (2021–Present)

Ottumwa Regional Airport (5.6 miles)

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  • Average Low 2021–2026

    42.1 °F

  • Average 2021–2026

    52.7 °F

  • Average High 2021–2026

    63.3 °F
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