Danbury Weather Forecast

    • 58
    • 70

    Slight Chance Rain Showers

    • 55
    • 78

    Partly Sunny

    • 49
    • 73

    Rain Showers Likely

    • 48
    • 73

    Mostly Sunny

    • 52
    • 76

    Partly Sunny

    • 50
    • 76

    Partly Sunny

    • 57
    • 74

    Chance Rain Showers

Today 3 Sep Merrimack

Partly sunny with a slight chance of Showers and Thunderstorms. Highs in the upper 70s. Light and variable Winds. Chance of rain 20 percent.

Tonight 3 Sep Merrimack

Partly cloudy this Evening, then becoming mostly cloudy. Patchy fog. Lows in the upper 50s. Light and variable Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Danbury Temperature Statistics

September Temperature

Plymouth Municipal Airport (18 miles)

  • Lowest 1 September, 2026

    49.1 °F

  • Average September

    62.4 °F

  • Highest 1 September, 2026

    75.4 °F

Climate (2021–2026)

Plymouth Municipal Airport (18 miles)

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  • Average Low 2021–2026

    36.1 °F

  • Average 2021–2026

    46.4 °F

  • Average High 2021–2026

    57 °F
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