December weather forecast
West Hartford, CT

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Weather in December

December, concluding the year in West Hartford, conjures a striking winter scene with temperature lows touching 27.7°F (-2.4°C). The month sees less sunlight than previous months, with shorter daylight hours and a drop in the UV Index. Snowfall gains momentum, turning the city into a winter wonderland. The atmosphere remains noticeably humid, though wind speed remains relatively steady. Thus, December in West Hartford displays a typical winter climate with cold temperatures, increased snowfall, and frosty winds.

Temperature

December indicates a shift in the average high-temperature, from November's frosty 48.7°F (9.3°C) to a wintry 38.3°F (3.5°C). In West Hartford, December nights witness a steady temperature drop to a subzero cold 27.7°F (-2.4°C).

Humidity

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

Rainfall

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

Snowfall

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

Daylight

The month with the shortest days in West Hartford is December, with an average of 9h and 12min of daylight.
On the first day of the month, sunrise is at 6:59 am and sunset at 4:21 pm. On the last day of December, in West Hartford, sunrise is at 7:18 am and sunset at 4:30 pm EST.

Sunshine

In December, the average sunshine is 4.8h.

UV index

December is the month with the lowest UV index in West Hartford, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum daily UV index of 1 in December interprets into the following recommendations:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
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Frequently asked questions

How cold is it in West Hartford in December?

An average high-temperature, in December, in West Hartford, is 38.3°F (3.5°C) and the average low-temperature is 27.7°F (-2.4°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines relative humidity and air temperature, in August is evaluated at 84.2°F (29°C).

What is the average humidity in December in West Hartford?

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

What is the wettest month in West Hartford?

December is the month with the most rainfall in West Hartford. Rain falls for 11.5 days and accumulates 3.19" (81mm) of precipitation.

How much does it rain in West Hartford in December?

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

How much does it snow in West Hartford in December?

In West Hartford, in December, snow falls for 5.4 days, with typically accumulated 2.44" (62mm) of snow.

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 12min of daylight.

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

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

When are sunrise and sunset in December in West Hartford?

On the first day of December, sunrise is at 6:59 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 long on average sun shines in December in West Hartford?

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

What is the month with the lowest UV index in West Hartford?

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

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

In December, the average daily maximum UV index in West Hartford, Connecticut, is 1. A UV Index estimate of 2, and below, represents a minimal hazard to health from unsafe 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
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 1min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in December: 4h and 5min

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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West Hartford, Connecticut, USA

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