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
With December's onset, the weather shows a temperature decrease, transitioning from a fresh 50.4°F (10.2°C) in November to a cold 40.8°F (4.9°C). Jewett City reports an average low-temperature of 30.4°F (-0.9°C) during the nights of December.Humidity
The average relative humidity in December is 76%.Rainfall
The month with the most rainfall is December, when the rain falls for 11.2 days and typically aggregates up to 3.5" (89mm) of precipitation.Snowfall
January through May, November and December are months with snowfall. In December, it is snowing for 4.3 days. Throughout December, 1.54" (39mm) of snow is accumulated. In Jewett City, during the entire year, snow falls for 24.9 days and aggregates up to 11.54" (293mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 12min of daylight.On the first day of December, sunrise is at 6:55 am and sunset at 4:18 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 4:27 pm EST.
Sunshine
February and December, with an average of 4.7h of sunshine, are months with the least sunshine.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 value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for the average person.Note: A daily maximum UV index of 2 in December translates into the following instructions:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. 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. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is December cold?
What is the average humidity in December in Jewett City?
What is the rainiest month?
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?
When is the sunrise / sunset in December?
What are the months with the least sunshine?
How long on average sun shines in December?
What is the month with the lowest UV index in Jewett City?
What is the UV index reading in December?
Average temperature in December
Jewett City, CT
- Average high temperature in December: 40.8°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (35.2°F).
- Average low temperature in December: 30.4°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 (23.5°F).
Average pressure in December
Jewett City, CT
- Average pressure in December: 30.04"Hg
The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Jewett City, CT
- Average wind speed in December: 9.2mph
The windiest month (with the highest average wind speed) is January (9.6mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in December
Jewett City, CT
- Average humidity in December: 76%
The months with the highest relative humidity are June and July (79%).
The month with the lowest relative humidity is April (72%).
Average rainfall in December
Jewett City, CT
- Average rainfall in December: 3.5"
The wettest month (with the highest rainfall) is December (3.5").
The driest month (with the least rainfall) is September (1.42").
Average rainfall days in December
Jewett City, CT
- Average rainfall days in December: 11.2 days
The months with the highest number of rainy days are May, June and July (15.8 days).
The months with the least rainy days are January and February (8.4 days).
Average snowfall in December
Jewett City, CT
- Average snowfall in December: 1.54"
The month with the highest snowfall is March (3.7").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Jewett City, CT
- Average snowfall days in December: 4.3 days
The month with the highest number of snowfall days is February (6.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Jewett City, CT
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 4h and 4min
The months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The months with the least sunshine are February and December (Average sunshine: 4h and 42min).
Average sunshine days in December
Jewett City, CT
- Average sunshine days in December: 15.7 days
The month with the most sunshine days is November (18.3 days).
The month with the least sunshine days is June (12.1 days).
Average UV index in December
Jewett City, 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
Jewett City, CT
- Average cloud cover in December: 48
The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in December
Jewett City, CT
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, August, September, October, November and December (6mi).
The months with the lowest visibility are May, June and July (5mi).
Jewett City, Connecticut, USA
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