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 arrival, Gilman sees a decrease in average high-temperatures, moving from a fresh 50.2°F (10.1°C) in November to a wintry 40.8°F (4.9°C). Gilman's average low-temperature in the month of December is recorded at a freezing cold 29.8°F (-1.2°C).Humidity
The average relative humidity in December is 76%.Rainfall
December is the month with the most rainfall. Rain falls for 11.3 days and accumulates 3.7" (94mm) of precipitation.Snowfall
January through May, November and December are months with snowfall. In Gilman, during December, snow falls for 4.8 days and regularly aggregates up to 1.73" (44mm) of snow. In Gilman, during the entire year, snow falls for 26.4 days and aggregates up to 11.14" (283mm) 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 the month, sunrise is at 6:56 am and sunset at 4:19 pm. On the last day of December, sunrise is at 7:15 am and sunset at 4:28 pm EST.
Sunshine
The month with the least sunshine is December, with an average of 4.6h of 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 reading of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: The UV index of 2 during December leads to these advisories:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
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?
What is the wettest month?
How many days does it rain in December in Gilman?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Gilman have in December?
When is the sunrise / sunset in December in Gilman?
What is the month with the least sunshine?
How long on average sun shines in December?
What is the month with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Gilman, CT
- Average high temperature in December: 40.8°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 (34.9°F).
- Average low temperature in December: 29.8°F
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).
Average pressure in December
Gilman, CT
- Average pressure in December: 30.05"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
Gilman, CT
- Average wind speed in December: 8.9mph
The windiest month (with the highest average wind speed) is January (9.4mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).
Average humidity in December
Gilman, CT
- Average humidity in December: 76%
The months with the highest relative humidity are February, June, July and September (78%).
The month with the lowest relative humidity is April (72%).
Average rainfall in December
Gilman, CT
- Average rainfall in December: 3.7"
The wettest month (with the highest rainfall) is December (3.7").
The driest month (with the least rainfall) is September (1.61").
Average rainfall days in December
Gilman, CT
- Average rainfall days in December: 11.3 days
The months with the highest number of rainy days are May and July (16.3 days).
The month with the least rainy days is January (9 days).
Average snowfall in December
Gilman, CT
- Average snowfall in December: 1.73"
The month with the highest snowfall is March (3.43").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Gilman, CT
- Average snowfall days in December: 4.8 days
The month with the highest number of snowfall days is February (7.3 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
Gilman, 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 12min).
The month with the least sunshine is December (Average sunshine: 4h and 36min).
Average sunshine days in December
Gilman, CT
- Average sunshine days in December: 15.9 days
The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is June (11.6 days).
Average UV index in December
Gilman, 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
Gilman, CT
- Average cloud cover in December: 49
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
Gilman, CT
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, September, October, November and December (6mi).
The months with the lowest visibility are May, June, July and August (5mi).
Gilman, Connecticut, USA
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