Danbury Weather Forecast

    • 63
    • 67

    Rain

    • 49
    • 78

    Partly Sunny

    • 46
    • 70

    Mostly Sunny

    • 55
    • 76

    Chance Rain Showers

    • 56
    • 77

    Chance Rain Showers

    • 52
    • 74

    Partly Sunny

    • 59
    • 77

    Slight Chance Rain Showers

Today 9 Sep Merrimack

Cloudy. A chance of Sprinkles this Morning, then a slight chance of Showers this afternoon. Highs in the mid 70s. Light and variable Winds. Chance of rain 20 percent.

Tonight 9 Sep Merrimack

Isolated Thunderstorms. Rain. Lows in the mid 60s. South Winds 10 to 15 Mph with Gusts up to 30 Mph. Chance of rain near 100 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Danbury Temperature Statistics

September Temperature

Plymouth Municipal Airport (18 miles)

  • Lowest 7 September, 2026

    47.5 °F

  • Average September

    63.6 °F

  • Highest 4 September, 2026

    77.5 °F

Climate (2021–2026)

Plymouth Municipal Airport (18 miles)

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  • Average Low 2021–2026

    36.2 °F

  • Average 2021–2026

    46.4 °F

  • Average High 2021–2026

    57 °F
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