December weather forecastGrosvenor Dale, CT
December
Weather in December
The first month of the winter, December, is also a wintry month in Grosvenor Dale, Connecticut, with an average temperature varying between 27°F (-2.8°C) and 37.2°F (2.9°C).Temperature
The beginning of December involves a decrease in the average high-temperature, transitioning from a frosty 47.3°F (8.5°C) in November to a wintry 37.2°F (2.9°C). An average minimum temperature of 27°F (-2.8°C) is recorded during the month of December.Humidity
In Grosvenor Dale, the average relative humidity in December is 79%.Rainfall
The month with the most rainfall in Grosvenor Dale is December, when the rain falls for 10.9 days and typically aggregates up to 3.11" (79mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In December, it is snowing for 6.1 days. Throughout December, 3.39" (86mm) of snow is accumulated. In Grosvenor Dale, during the entire year, snow falls for 37.7 days and aggregates up to 20.59" (523mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 12min of daylight.On the first day of December, sunrise is at 6:56 am and sunset at 4:17 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 4:26 pm EST.
Sunshine
In December, the average sunshine is 4.6h.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 health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum UV index of 2 during December leads to these instructions:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Grosvenor Dale, CT
- Average high temperature in December: 37.2°F
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (31.5°F).
- Average low temperature in December: 27°F
The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is January (19.6°F).
Average pressure in December
Grosvenor Dale, 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
Grosvenor Dale, CT
- Average wind speed in December: 8.6mph
The windiest month (with the highest average wind speed) is January (9mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in December
Grosvenor Dale, CT
- Average humidity in December: 79%
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is April (72%).
Average rainfall in December
Grosvenor Dale, CT
- Average rainfall in December: 3.11"
The wettest month (with the highest rainfall) is December (3.11").
The driest month (with the least rainfall) is September (1.81").
Average rainfall days in December
Grosvenor Dale, CT
- Average rainfall days in December: 10.9 days
The month with the highest number of rainy days is July (16.3 days).
The months with the least rainy days are January and February (7.8 days).
Average snowfall in December
Grosvenor Dale, CT
- Average snowfall in December: 3.39"
The months with the highest snowfall are February and March (5.08").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Grosvenor Dale, CT
- Average snowfall days in December: 6.1 days
The month with the highest number of snowfall days is March (9.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Grosvenor Dale, 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 36min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in December
Grosvenor Dale, CT
- Average sunshine days in December: 15.5 days
The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is July (12.9 days).
Average UV index in December
Grosvenor Dale, 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).
Average cloud cover in December
Grosvenor Dale, CT
- Average cloud cover in December: 49
The month with the most cloud cover is March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 37).
Average visibility in December
Grosvenor Dale, CT
- Average visibility in December: 6mi
The months with the highest visibility are March, April, November and December (6mi).
The months with the lowest visibility are January, February, May, June, July, August, September and October (5mi).
