Ottumwa Weather Forecast

    • 20
    • 43

    Becoming Sunny

    • 31
    • 42

    Partly Sunny

    • 36
    • 50

    Mostly Cloudy

    • 33
    • 50

    Mostly Cloudy

    • 44
    • 55

    Mostly Cloudy

    • 36
    • 64

    Partly Sunny

    • 32
    • 51

    Mostly Cloudy

Today 20 Dec Wapello

Mostly sunny. Highs in the lower 40s. Temperature falling into the upper 30s late. Northwest Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 20 Dec Wapello

Mostly clear. Lows around 20. Northwest Winds 5 to 10 Mph with Gusts up to 20 Mph.

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Ottumwa Temperature Statistics

December Temperature

Ottumwa Regional Airport (5.6 miles)

  • Lowest 13 December, 2025

    -6 °F

  • Average December

    22.8 °F

  • Highest 9 December, 2025

    46 °F

Climate (2020–Present)

Ottumwa Regional Airport (5.6 miles)

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  • Average Low 2020–2025

    41.9 °F

  • Average 2020–2025

    52.3 °F

  • Average High 2020–2025

    62.7 °F
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