Cannondale Weather Forecast

    • 61
    • 82

    Slight Chance Thunderstorms

    • 57
    • 78

    Partly Sunny

    • 54
    • 73

    Mostly Sunny

    • 57
    • 76

    Mostly Sunny

    • 58
    • 78

    Partly Sunny

    • 64
    • 77

    Mostly Cloudy

Today 4 Sep Northern Fairfield

Partly sunny. A slight chance of Showers and Thunderstorms this morning. Highs in the lower 80s. Northwest Winds 5 to 10 Mph. Chance of rain 20 percent.

Tonight 4 Sep Northern Fairfield

Partly cloudy in the Evening, then clearing. Lows around 60. Northwest Winds around 5 Mph.

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Cannondale Temperature Statistics

September Temperature

Danbury, Danbury Municipal Airport (11.2 miles)

  • Lowest 1 September, 2026

    62.1 °F

  • Average September

    69.2 °F

  • Highest 1 September, 2026

    77 °F

Climate (2021–2026)

Danbury, Danbury Municipal Airport (11.2 miles)

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  • Average Low 2021–2026

    43.3 °F

  • Average 2021–2026

    53.4 °F

  • Average High 2021–2026

    63.1 °F
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