Decatur Weather Forecast

    • 34
    • 49

    Slight Chance Rain Showers

    • 42
    • 53

    Chance Rain Showers

    • 34
    • 52

    Chance Rain Showers

    • 35
    • 50

    Mostly Sunny

    • 38
    • 58

    Slight Chance Rain Showers

    • 42
    • 58

    Chance Rain Showers

Today 6 Dec DeKalb

Cloudy with a slight chance of Showers this Morning, then partly sunny this afternoon. Highs around 50. Light west Winds. Chance of rain 20 percent.

Tonight 6 Dec DeKalb

Mostly clear in the Evening, then becoming partly cloudy. Lows in the lower 30s. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Decatur Temperature Statistics

December Temperature

Atlanta, De Kalb-Peachtree Airport (6.8 miles)

  • Lowest 3 December, 2025

    32 °F

  • Average December

    42.2 °F

  • Highest 3 December, 2025

    54 °F

Climate (2020–Present)

Atlanta, De Kalb-Peachtree Airport (6.8 miles)

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  • Average Low 2020–2025

    52.9 °F

  • Average 2020–2025

    62.8 °F

  • Average High 2020–2025

    73.3 °F
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