Decatur Weather Forecast

    • 19
    • 23

    Chance Snow

    • 21
    • 42

    Mostly Cloudy

    • 18
    • 30

    Mostly Sunny

    • 32
    • 38

    Mostly Cloudy

    • 33
    • 47

    Mostly Cloudy

    • 44
    • 51

    Chance Rain

Today 19 Dec Adams

Mostly cloudy with a chance of snow this Morning, then partly cloudy this afternoon. Little or no snow accumulation. Blustery and much cooler with Highs in the lower 20s. West Winds 15 to 25 Mph with Gusts up to 40 Mph. Chance of snow 50 percent. Wind chill Values as low as zero.

Tonight 19 Dec Adams

Partly cloudy in the Evening, then becoming mostly clear. Cold. Near steady temperature in the lower 20s. Southwest Winds 10 to 15 Mph, becoming south after midnight.

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Decatur Temperature Statistics

December Temperature

Fort Wayne International Airport (17.4 miles)

  • Lowest 5 December, 2025

    -2 °F

  • Average December

    22.8 °F

  • Highest 17 December, 2025

    44.1 °F

Climate (2020–Present)

Fort Wayne International Airport (17.4 miles)

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  • Average Low 2020–2025

    43.2 °F

  • Average 2020–2025

    52.6 °F

  • Average High 2020–2025

    62.4 °F
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