December weather forecast
West Hartford, CT

Weather in December

December, the first month of the winter in West Hartford, is still a cold month, with temperature in the range of an average high of 38.3°F (3.5°C) and an average low of 27.7°F (-2.4°C).

Temperature

In December, the average high-temperature drops from a chilly 48.7°F (9.3°C) in November to a cold 38.3°F (3.5°C). In West Hartford, Connecticut, the average low-temperature is 27.7°F (-2.4°C).

Humidity

The average relative humidity in December in West Hartford is 78%.

Rainfall

The month with the most rainfall in West Hartford is December, when the rain falls for 11.5 days and typically aggregates up to 3.19" (81mm) of precipitation.

Snowfall

Months with snowfall in West Hartford are January through May, November and December. In West Hartford, during December, snow falls for 5.4 days and regularly aggregates up to 2.44" (62mm) of snow. Throughout the year, there are 30.2 snowfall days, and 15.67" (398mm) of snow is accumulated.

Daylight

With an average of 9h and 13min of daylight, December has the shortest days of the year in West Hartford.
On the first day of December in West Hartford, sunrise is at 6:58 am and sunset at 4:21 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 4:30 pm EST.

Sunshine

In West Hartford, the average sunshine in December is 4.8h.

UV index

With an average maximum UV index of 1, December is the month with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: In December, the average maximum UV index of 1 translate into the following recommendations:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the average humidity in December in West Hartford?

In West Hartford, Connecticut, the average relative humidity in December is 78%.

What is the rainiest month in West Hartford?

The month with the most rainfall in West Hartford, Connecticut, is December, when the rain falls for 11.5 days and typically aggregates up to 3.19" (81mm) of precipitation.

How many days does it rain in December in West Hartford?

In West Hartford, in December, it is raining for 11.5 days, with typically 3.19" (81mm) of accumulated precipitation.

How many days does it snow in December in West Hartford?

In December, in West Hartford, it is snowing for 5.4 days. Throughout December, 2.44" (62mm) of snow is accumulated.

What is the month with the shortest days in West Hartford?

The month with the shortest days in West Hartford is December, with an average of 9h and 13min of daylight.

What is the average length of the day in December in West Hartford?

The average day length in December in West Hartford, Connecticut, is 9h and 13min.

What time are sunrise and sunset in December in West Hartford?

On the first day of December in West Hartford, sunrise is at 6:58 am and sunset at 4:21 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 4:30 pm EST.

How many hours of sunshine does West Hartford have in December?

In December, the average sunshine duration in West Hartford is 4.8h.

When is the lowest UV index in West Hartford?

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

What is the UV index reading in December in West Hartford?

In West Hartford, 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 unprotected exposure to UV radiation.
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
West Hartford, CT

Average temperature in December - West Hartford, CT
  • Average high temperature in December: 38.3°F

The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (32.7°F).

  • Average low temperature in December: 27.7°F

The month with the highest average low temperature is July (63.9°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).

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Average pressure in December
West Hartford, CT

Average pressure in December - West Hartford, CT
  • Average pressure in December: 30.05"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
West Hartford, CT

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

The windiest month (with the highest average wind speed) is January (8.2mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).

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Average humidity in December
West Hartford, CT

Average humidity in December - West Hartford, CT
  • Average humidity in December: 78%

The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is April (70%).

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Average rainfall in December
West Hartford, CT

Average rainfall in December - West Hartford, CT
  • Average rainfall in December: 3.19"

The wettest month (with the highest rainfall) is December (3.19").
The driest month (with the least rainfall) is September (2.05").

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Average rainfall days in December
West Hartford, CT

Average rainfall days in December - West Hartford, CT
  • Average rainfall days in December: 11.5 days

The month with the highest number of rainy days is July (18 days).
The month with the least rainy days is January (9 days).

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Average snowfall in December
West Hartford, CT

Average snowfall in December - West Hartford, CT
  • Average snowfall in December: 2.44"

The month with the highest snowfall is February (4.8").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in December
West Hartford, CT

Average snowfall days in December - West Hartford, CT
  • Average snowfall days in December: 5.4 days

The month with the highest number of snowfall days is February (8.3 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
West Hartford, CT

Average daylight in December / Average sunshine in December - West Hartford, CT
  • Average daylight in December: 9h and 13min

The month with the longest days is June (Average daylight: 15h and 10min).
The month with the shortest days is December (Average daylight: 9h and 13min).

  • Average sunshine in December: 4h and 48min

The months with the most sunshine are July and August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

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Average sunshine days in December
West Hartford, CT

Average sunshine days in December - West Hartford, CT
  • Average sunshine days in December: 15.4 days

The month with the most sunshine days is January (17.5 days).
The month with the least sunshine days is June (10.4 days).

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Average UV index in December
West Hartford, CT

Average UV index in December - West Hartford, CT
  • Average UV index in December: 1

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

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Average cloud cover in December
West Hartford, CT

Average cloud cover in December - West Hartford, CT
  • Average cloud cover in December: 48

The months with the most cloud cover are February and March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 34).

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Average visibility in December
West Hartford, CT

Average visibility in December - West Hartford, CT
  • Average visibility in December: 6mi

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

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