Danbury Weather Forecast

    • 60
    • 78

    Rain Showers Likely

    • 48
    • 72

    Mostly Sunny

    • 52
    • 72

    Mostly Sunny

    • 59
    • 78

    Partly Sunny

    • 61
    • 79

    Chance Rain Showers

    • 57
    • 79

    Chance Rain Showers

Today 13 Sep Northern Fairfield

Showers with a chance of Thunderstorms this Morning, then Showers likely with a slight chance of Thunderstorms this afternoon. Locally heavy rainfall possible. Highs in the upper 70s. East Winds around 5 Mph, becoming northwest around 5 Mph this afternoon. Chance of rain near 100 percent.

Tonight 13 Sep Northern Fairfield

Partly cloudy. A slight chance of Showers after midnight. Lows in the lower 60s. Southwest Winds around 5 Mph, becoming northwest with Gusts up to 20 Mph after midnight. Chance of rain 20 percent.

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Danbury Temperature Statistics

September Temperature

Danbury, Danbury Municipal Airport (1.9 miles)

  • Lowest 7 September, 2026

    50 °F

  • Average September

    68.4 °F

  • Highest 10 September, 2026

    82.9 °F

Climate (2021–2026)

Danbury, Danbury Municipal Airport (1.9 miles)

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  • Average Low 2021–2026

    43.3 °F

  • Average 2021–2026

    53.5 °F

  • Average High 2021–2026

    63.1 °F
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