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December Weather in Danbury, United States

Last updated: June 24, 2025

In December, the average temperature in Danbury, United States hovers around 1°C (34°F), with fluctuations that can bring the minimum down to -15°C (5°F) and a maximum of 16°C (61°F). Expect 115 mm (4.5 in) of precipitation spread over 11 days, and a notable average humidity of 80%, making it a month to prepare for varying weather conditions!

December Temperature in Danbury

In December in Danbury, the average temperature is 1°C (34°F). Maximums can reach 16°C (61°F), and minimums can drop as low as -15°C (5°F). Be prepared for a wide range of temperatures and pack accordingly if you plan to travel during this time.

December Weather in Danbury: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Danbury, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Danbury, December typically has an average temperature of 1°C (34°F), with highs reaching up to 16°C (61°F) and lows dropping to around -15°C (5°F).
JanFebMarAprMayJunJulAugSepOctNovDec303338495969747366564234
Data source: Temperature data for Danbury generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Danbury

In Danbury in December, the total precipitation amount is 115 mm (4.5 in) spread over 11 days.

December Precipitation Trends in Danbury

The chart displays monthly precipitation patterns in Danbury, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Danbury, December typically receives around 115 mm (4.5 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec71978912411510214511912214793115
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Danbury

In Danbury in December, humidity is 80%. With an average temperature of 1°C (34°F), this humidity feels like a damp chill that seeps through your layers, making outdoor activities uncomfortable and potentially discouraging for travelers.

December Average Humidity in Danbury

This chart illustrates the average monthly humidity levels in Danbury, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Danbury is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%82%81%78%70%69%62%65%68%74%82%80%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Danbury

In Danbury in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Danbury, you can visit Hourly UV Index in Danbury.

Maximum UV Index Levels in Danbury for December

The chart shows the monthly maximum UV Index (UVI) for Danbury in December, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In December, the maximum UV index in Danbury typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356810101098642
Data source: Danbury December UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How December Weather in Danbury Compares to Other Months

Weather in Danbury varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Danbury, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Danbury, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)71 mm (2.8 inches)84%moderate
February Weather0°C (33°F)97 mm (3.8 inches)82%moderate
March Weather3°C (38°F)89 mm (3.5 inches)81%high
April Weather9°C (49°F)124 mm (4.9 inches)78%very high
May Weather15°C (59°F)115 mm (4.5 inches)69%very high
June Weather20°C (69°F)102 mm (4.0 inches)69%very high
July Weather24°C (75°F)145 mm (5.7 inches)62%very high
August Weather23°C (73°F)119 mm (4.7 inches)65%very high
September Weather19°C (66°F)122 mm (4.8 inches)68%very high
October Weather13°C (56°F)147 mm (5.8 inches)74%high
November Weather6°C (42°F)93 mm (3.7 inches)82%moderate
December Weather1°C (34°F)115 mm (4.5 inches)80%low

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