December weather forecast
Danbury, CT

Weather in December

The first month of the winter, December, is still a cold month in Danbury, Connecticut, with an average temperature varying between 29.3°F (-1.5°C) and 39.6°F (4.2°C).

Temperature

In December, the average high-temperature decreases from a frosty 48.7°F (9.3°C) in November to a wintry 39.6°F (4.2°C). In Danbury, Connecticut, in December, the average low-temperature is 29.3°F (-1.5°C).

Humidity

The average relative humidity in December in Danbury is 78%.

Rainfall

In Danbury, it is raining for 8.1 days, with typically 1.02" (26mm) of accumulated precipitation. In Danbury, during the entire year, the rain falls for 123.7 days and collects up to 11.65" (296mm) of precipitation.

Snowfall

Months with snowfall are January through April, October through December. In Danbury, during December, snow falls for 4.1 days and regularly aggregates up to 0.55" (14mm) of snow. In Danbury, during the entire year, snow falls for 20.5 days and aggregates up to 2.68" (68mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 14min of daylight.
On the first day of December in Danbury, sunrise is at 7:00 am and sunset at 4:25 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 4:34 pm EST.

Sunshine

In December, the average sunshine in Danbury is 4.7h.

UV index

The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: The average daily UV index of 1 in December transform into the following instructions:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the temperature in December in Danbury?

The average high-temperature, in December, in Danbury, Connecticut, is 39.6°F (4.2°C), while the average low-temperature is 29.3°F (-1.5°C). in July, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, is appraised at 87.8°F (31°C).

What is the average humidity in December in Danbury?

In December, the average relative humidity in Danbury is 78%.

How many days does it rain in December in Danbury?

In Danbury, during December, the rain falls for 8.1 days and regularly aggregates up to 1.02" (26mm) of precipitation.

How much does it snow in Danbury in December?

In Danbury, during December, snow falls for 4.1 days and regularly aggregates up to 0.55" (14mm) of snow.

What is the month with the shortest days in Danbury?

The month with the shortest days in Danbury is December, with an average of 9h and 14min of daylight.

How many hours of daylight does Danbury have in December?

In December, the average day length in Danbury, Connecticut, is 9h and 14min.

When is the sunrise / sunset in December in Danbury?

On the first day of December in Danbury, sunrise is at 7:00 am and sunset at 4:25 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 4:34 pm EST.

How many hours of sunshine does Danbury have in December?

In Danbury, the average sunshine duration in December is 4.7h.

When is the lowest UV index in Danbury?

December is the month with the lowest UV index, with an average maximum UV index of 1.

What is the UV index intensity in December in Danbury?

In Danbury, Connecticut, the average daily maximum UV index in December is 1. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Danbury, CT

Average temperature in December - Danbury, CT
  • Average high temperature in December: 39.6°F

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (33.4°F).

  • Average low temperature in December: 29.3°F

The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).

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Average pressure in December
Danbury, CT

Average pressure in December - Danbury, CT
  • Average pressure in December: 30.06"Hg

The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in December
Danbury, CT

Average wind speed in December - Danbury, CT
  • Average wind speed in December: 7.8mph

The windiest months (with the highest average wind speed) are January and March (8.2mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

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Average humidity in December
Danbury, CT

Average humidity in December - Danbury, CT
  • Average humidity in December: 78%

The months with the highest relative humidity are February and October (79%).
The month with the lowest relative humidity is April (72%).

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Average rainfall in December
Danbury, CT

Average rainfall in December - Danbury, CT
  • Average rainfall in December: 1.02"

The wettest month (with the highest rainfall) is July (1.57").
The driest months (with the least rainfall) are January and February (0.55").

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Average rainfall days in December
Danbury, CT

Average rainfall days in December - Danbury, CT
  • Average rainfall days in December: 8.1 days

The month with the highest number of rainy days is July (14.4 days).
The month with the least rainy days is January (5.5 days).

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Average snowfall in December
Danbury, CT

Average snowfall in December - Danbury, CT
  • Average snowfall in December: 0.55"

The months with the highest snowfall are January and February (0.75").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in December
Danbury, CT

Average snowfall days in December - Danbury, CT
  • Average snowfall days in December: 4.1 days

The month with the highest number of snowfall days is February (5.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in December /
Average sunshine in December
Danbury, CT

Average daylight in December / Average sunshine in December - Danbury, CT
  • Average daylight in December: 9h and 14min

The month with the longest days is June (Average daylight: 15h and 7min).
The month with the shortest days is December (Average daylight: 9h and 14min).

  • Average sunshine in December: 4h and 42min

The months with the most sunshine are July and August (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

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Average sunshine days in December
Danbury, CT

Average sunshine days in December - Danbury, CT
  • Average sunshine days in December: 19.3 days

The month with the most sunshine days is January (22.5 days).
The month with the least sunshine days is June (13.3 days).

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Average UV index in December
Danbury, CT

Average UV index in December - Danbury, CT
  • Average UV index in December: 1

The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in December
Danbury, CT

Average cloud cover in December - Danbury, CT
  • Average cloud cover in December: 50

The months with the most cloud cover are February, March and December (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 33).

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Average visibility in December
Danbury, CT

Average visibility in December - Danbury, CT
  • Average visibility in December: 6mi

The months with the highest visibility are January, February, March, April, July, August, September, October, November and December (6mi).
The months with the lowest visibility are May and June (5mi).

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