December weather forecast
Windsor, CT

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Weather in December

December in Windsor announces the arrival of winter, bringing along colder temperatures and increased snowfall. Throughout this month, the city sees an average snowfall of 3.15" (80mm), second only to the peak observed in February. Winter coats and boots become a necessity and snow shoveling becomes a regular task for the residents. Despite the cold, the holiday season infuses a sense of cheer and warmth across Windsor, showcased through festive decorations, holiday markets, and gatherings. The embrace of winter gives residents the opportunity to indulge in various winter sports, further adding to the liveliness of the city in this festive season.

Temperature

As December commences in Windsor, the average high-temperature shows a reduction, transitioning from a chilly 48.9°F (9.4°C) in November to a cold 38.7°F (3.7°C). In December, the temperature in Windsor, Connecticut, drops to an average of 28°F (-2.2°C) at night.

Humidity

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

Rainfall

The month with the most rainfall in Windsor, Connecticut, is December, when the rain falls for 11.8 days and typically aggregates up to 3.27" (83mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In December, in Windsor, it is snowing for 5.8 days. Throughout December, 3.15" (80mm) of snow is accumulated. In Windsor, Connecticut, during the entire year, snow falls for 31.6 days and aggregates up to 17.13" (435mm) of snow.

Daylight

The month with the shortest days in Windsor, Connecticut, is December, with an average of 9h and 12min of daylight.
On the first day of December in Windsor, sunrise is at 6:59 am and sunset at 4:20 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 4:29 pm EST.

Sunshine

In Windsor, the average sunshine in December is 4.8h.

UV index

The months with the lowest UV index in Windsor are January through March, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: A maximum daily UV index of 2 during December morphs into the following directions:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. The Sun's radiation is especially intense around midday; try to stay in shade during this period. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
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Frequently asked questions

How cold is December in Windsor?

The high-temperature, in December, in Windsor, records 38.7°F (3.7°C), while the low-temperature is 28°F (-2.2°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, in August is calculated to be 86°F (30°C).

What is the average humidity in December in Windsor?

In December, the average relative humidity is 78%.

What is the wettest month in Windsor?

December is the month with the most rainfall in Windsor, Connecticut. Rain falls for 11.8 days and accumulates 3.27" (83mm) of precipitation.

How much does it rain in Windsor in December?

In December, the rain falls for 11.8 days. Throughout December, 3.27" (83mm) of precipitation is accumulated.

How much does it snow in Windsor in December?

In Windsor, during December, snow falls for 5.8 days and regularly aggregates up to 3.15" (80mm) of snow.

What is the month with the shortest days in Windsor?

The month with the shortest days in Windsor is December, with an average of 9h and 12min of daylight.

What is the average length of the day in December in Windsor?

In Windsor, the average day length in December is 9h and 12min.

When are sunrise and sunset in December in Windsor?

On the first day of December in Windsor, Connecticut, sunrise is at 6:59 am and sunset at 4:20 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 4:29 pm EST.

How many hours of sunshine does Windsor have in December?

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

What are the months with the lowest UV index in Windsor?

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Windsor, Connecticut.

What is the UV index reading in December in Windsor?

The average daily maximum UV index in December in Windsor is 2. 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
Windsor, CT

Average temperature in December - Windsor, CT
  • Average high temperature in December: 38.7°F

The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (32.9°F).

  • Average low temperature in December: 28°F

The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).

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Average pressure in December
Windsor, CT

Average pressure in December - Windsor, 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
Windsor, CT

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

The windiest months (with the highest average wind speed) are January and March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

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Average humidity in December
Windsor, CT

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

The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is April (71%).

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Average rainfall in December
Windsor, CT

Average rainfall in December - Windsor, CT
  • Average rainfall in December: 3.27"

The wettest month (with the highest rainfall) is December (3.27").
The driest month (with the least rainfall) is September (1.77").

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Average rainfall days in December
Windsor, CT

Average rainfall days in December - Windsor, CT
  • Average rainfall days in December: 11.8 days

The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (10 days).

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Average snowfall in December
Windsor, CT

Average snowfall in December - Windsor, CT
  • Average snowfall in December: 3.15"

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

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Average snowfall days in December
Windsor, CT

Average snowfall days in December - Windsor, CT
  • Average snowfall days in December: 5.8 days

The month with the highest number of snowfall days is February (8.5 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
Windsor, CT

Average daylight in December / Average sunshine in December - Windsor, 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
Windsor, CT

Average sunshine days in December - Windsor, CT
  • Average sunshine days in December: 15.1 days

The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is June (11.2 days).

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Average UV index in December
Windsor, CT

Average UV index in December - Windsor, CT
  • Average UV index in December: 2

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

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Average cloud cover in December
Windsor, CT

Average cloud cover in December - Windsor, CT
  • Average cloud cover in December: 48

The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 33).

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Average visibility in December
Windsor, CT

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

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

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Windsor, Connecticut, USA

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