Danbury Weather Forecast

    • 50
    • 68

    Increasing Clouds

    • 49
    • 62

    Rain

    • 48
    • 58

    Rain

    • 49
    • 57

    Rain Likely

    • 48
    • 64

    Mostly Cloudy

    • 50
    • 69

    Mostly Cloudy

Today 25 Sep Merrimack

Partly sunny. Highs in the upper 60s. Northeast Winds around 10 Mph with Gusts up to 20 Mph.

Tonight 25 Sep Merrimack

Cloudy with a 20 percent chance of rain. Lows in the lower 50s. Northeast Winds 10 to 15 Mph with Gusts up to 25 Mph.

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Danbury Temperature Statistics

September Temperature

Plymouth Municipal Airport (18 miles)

  • Lowest 15 September, 2026

    37.6 °F
  • Average September

    59.3 °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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