Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
December involves a decrease in temperature, down from a chilly 48.9°F (9.4°C) in November to a wintry 39°F (3.9°C). In December, Thompson encounters an average low-temperature of 27.7°F (-2.4°C) during the night.Humidity
In Thompson, the average relative humidity in December is 77%.Rainfall
In December, in Thompson, the rain falls for 10.5 days. Throughout December, 2.2" (56mm) of precipitation is accumulated. Throughout the year, there are 141.4 rainfall days, and 23.86" (606mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Thompson, Connecticut, in December, during 4.7 snowfall days, 1.65" (42mm) of snow is typically accumulated. Throughout the year, there are 27.6 snowfall days, and 11.34" (288mm) of snow is accumulated.Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 6:56 am and sunset at 4:17 pm. On the last day of December, sunrise is at 7:15 am and sunset at 4:26 pm EST.
Sunshine
In Thompson, the average sunshine in December is 4.7h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the average person.Note: In December, a daily maximum UV index of 2 leads to the following instructions:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Experience reduced UV exposure by about half when donning a wide-brim hat. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the average humidity in December?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
What time are sunrise and sunset in December in Thompson?
How long on average sun shines in December?
When is the lowest UV index?
How high is the UV index in December?
Average temperature in December
Thompson, CT
- Average high temperature in December: 39°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (33.1°F).
- Average low temperature in December: 27.7°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (21°F).
Average pressure in December
Thompson, CT
- Average pressure in December: 30.04"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Thompson, CT
- Average wind speed in December: 8.6mph
The windiest months (with the highest average wind speed) are January, February and March (9.1mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).
Average humidity in December
Thompson, CT
- Average humidity in December: 77%
The months with the highest relative humidity are February, September and October (79%).
The month with the lowest relative humidity is April (72%).
Average rainfall in December
Thompson, CT
- Average rainfall in December: 2.2"
The wettest month (with the highest rainfall) is April (2.4").
The driest month (with the least rainfall) is September (1.14").
Average rainfall days in December
Thompson, CT
- Average rainfall days in December: 10.5 days
The month with the highest number of rainy days is June (15.5 days).
The month with the least rainy days is February (7 days).
Average snowfall in December
Thompson, CT
- Average snowfall in December: 1.65"
The month with the highest snowfall is March (3.19").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Thompson, CT
- Average snowfall days in December: 4.7 days
The month with the highest number of snowfall days is January (6.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Thompson, 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 4min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in December
Thompson, CT
- Average sunshine days in December: 16.3 days
The month with the most sunshine days is November (18.3 days).
The month with the least sunshine days is June (13 days).
Average UV index in December
Thompson, CT
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
Thompson, CT
- Average cloud cover in December: 48
The month with the most cloud cover is March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility in December
Thompson, CT
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, October, November and December (6mi).
The months with the lowest visibility are May, June, July, August and September (5mi).
Thompson, Connecticut, USA
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