Decatur City Weather Forecast

    • 11
    • 32

    Mostly Cloudy

    • -3
    • 15

    Snow Likely

    • 6
    • 13

    Mostly Sunny

    • 23
    • 38

    Partly Sunny

    • 31
    • 46

    Partly Sunny

    • 31
    • 52

    Mostly Cloudy

Today 12 Dec Decatur

Mostly cloudy. Highs in the lower 30s. North Winds 5 to 10 Mph.

Tonight 12 Dec Decatur

Mostly cloudy. A chance of snow after midnight. Lows around 11. North Winds 5 to 10 Mph. Chance of snow 40 percent.

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Decatur City Temperature Statistics

December Temperature

Lamoni, Lamoni Municipal Airport (8.1 miles)

  • Lowest 4 December, 2025

    -2 °F

  • Average December

    24.2 °F

  • Highest 9 December, 2025

    46 °F

Climate (2020–Present)

Lamoni, Lamoni Municipal Airport (8.1 miles)

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  • Average Low 2020–2025

    43.4 °F

  • Average 2020–2025

    53.2 °F

  • Average High 2020–2025

    63.2 °F
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