December weather forecastEast Killingly, CT
December
Weather in December
The first month of the winter, December, is still a cold month in East Killingly, Connecticut, with an average temperature fluctuating between 28.8°F (-1.8°C) and 39.4°F (4.1°C).Temperature
As December arrives, East Killingly's weather displays a decrease in high-temperatures, transitioning from November's frosty 49.1°F (9.5°C) to a wintry 39.4°F (4.1°C). East Killingly's average low-temperature is measured at a subzero cold 28.8°F (-1.8°C) during December.Humidity
In East Killingly, the average relative humidity in December is 78%.Rainfall
December is the month with the most rainfall in East Killingly. Rain falls for 11.5 days and accumulates 3.43" (87mm) of precipitation.Snowfall
Months with snowfall are January through May, November and December. In East Killingly, in December, snow falls for 5 days, with typically accumulated 2.48" (63mm) of snow. Throughout the year, there are 30.6 snowfall days, and 14.02" (356mm) of snow is accumulated.Daylight
The month with the shortest days in East Killingly, Connecticut, is December, with an average of 9h and 12min of daylight.On the first day of December, sunrise is at 6:55 am and sunset at 4:17 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 4:26 pm EST.
Sunshine
In December, the average sunshine in East Killingly is 4.8h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in East Killingly. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 2 during December translates into the following directions:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Experience reduced UV exposure by about half when donning a wide-brim hat. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
East Killingly, CT
- Average high temperature in December: 39.4°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 (33.4°F).
- Average low temperature in December: 28.8°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 (21.6°F).
Average pressure in December
East Killingly, 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
East Killingly, CT
- Average wind speed in December: 8.8mph
The windiest month (with the highest average wind speed) is January (9.3mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).
Average humidity in December
East Killingly, CT
- Average humidity in December: 78%
The months with the highest relative humidity are February, June, July, September and October (79%).
The month with the lowest relative humidity is April (73%).
Average rainfall in December
East Killingly, CT
- Average rainfall in December: 3.43"
The wettest month (with the highest rainfall) is December (3.43").
The driest month (with the least rainfall) is September (1.81").
Average rainfall days in December
East Killingly, CT
- Average rainfall days in December: 11.5 days
The month with the highest number of rainy days is July (17.5 days).
The month with the least rainy days is January (8.3 days).
Average snowfall in December
East Killingly, CT
- Average snowfall in December: 2.48"
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
East Killingly, CT
- Average snowfall days in December: 5 days
The month with the highest number of snowfall days is January (7.8 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
East Killingly, CT
- Average daylight in December: 9h and 12min
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 48min
The months with the most sunshine are July and August (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in December
East Killingly, CT
- Average sunshine days in December: 15.8 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is June (10.6 days).
Average UV index in December
East Killingly, 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
East Killingly, 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).
Average visibility in December
East Killingly, 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).
