Danbury Weather Forecast

    • 41
    • 65

    Increasing Clouds

    • 42
    • 54

    Rain Showers

    • 42
    • 62

    Partly Sunny

    • 41
    • 61

    Partly Sunny

    • 41
    • 60

    Mostly Cloudy

    • 44
    • 58

    Chance Rain Showers

Today 19 Sep Merrimack

Mostly sunny. Highs in the mid 60s. Light and variable Winds.

Tonight 19 Sep Merrimack

Mostly clear in the Evening, then becoming partly cloudy. Lows in the lower 40s. 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 15 September, 2026

    37.6 °F

  • Average September

    61.5 °F

  • Highest 10 September, 2026

    80.1 °F

Climate (2021–2026)

Plymouth Municipal Airport (18 miles)

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  • Average Low 2021–2026

    36.1 °F

  • Average 2021–2026

    46.3 °F

  • Average High 2021–2026

    56.9 °F
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