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
In December, the average high-temperature decreases from a wintry 41.2°F (5.1°C) in November to a subzero cold 30°F (-1.1°C). In December, New Haven experiences an average nighttime temperature of 19.8°F (-6.8°C).Humidity
In December, the average relative humidity in New Haven is 84%.Rainfall
In New Haven, in December, during 12.3 rainfall days, 2.36" (60mm) of precipitation is typically accumulated. In New Haven, during the entire year, the rain falls for 175.7 days and collects up to 30.47" (774mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In New Haven, in December, snow falls for 19 days, with typically accumulated 7.8" (198mm) of snow. In New Haven, during the entire year, snow falls for 96 days and aggregates up to 49.8" (1265mm) of snow.Daylight
The month with the shortest days in New Haven is December, with an average of 8h and 54min of daylight.On the first day of the month, sunrise is at 7:08 am and sunset at 4:15 pm. On the last day of December, in New Haven, sunrise is at 7:27 am and sunset at 4:24 pm EST.
Sunshine
In December, the average sunshine in New Haven is 3.4h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index in New Haven, Vermont. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for the ordinary person.Note: In December, the maximum UV index of 1 suggests this advice:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Frequently asked questions
How cold is it in New Haven in December?
What is the average humidity in December in New Haven?
How many days does it rain in December in New Haven?
How many days does it snow in December in New Haven?
What is the month with the shortest days in New Haven?
How many hours of daylight does New Haven have in December?
When are sunrise and sunset in December in New Haven?
How many hours of sunshine does New Haven have in December?
What are the months with the lowest UV index in New Haven?
How high is the UV index in December in New Haven?
Average temperature in December
New Haven, VT
- Average high temperature in December: 30°F
The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (24.1°F).
- Average low temperature in December: 19.8°F
The month with the highest average low temperature is July (56.8°F).
The coldest month (with the lowest average low temperature) is January (11.7°F).
Average pressure in December
New Haven, VT
- Average pressure in December: 30.05"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
New Haven, VT
- Average wind speed in December: 6.6mph
The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in December
New Haven, VT
- Average humidity in December: 84%
The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are April and May (76%).
Average rainfall in December
New Haven, VT
- Average rainfall in December: 2.36"
The wettest month (with the highest rainfall) is June (3.39").
The driest month (with the least rainfall) is September (1.85").
Average rainfall days in December
New Haven, VT
- Average rainfall days in December: 12.3 days
The month with the highest number of rainy days is June (19.2 days).
The month with the least rainy days is January (8.7 days).
Average snowfall in December
New Haven, VT
- Average snowfall in December: 7.8"
The month with the highest snowfall is February (11.06").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
New Haven, VT
- Average snowfall days in December: 19 days
The month with the highest number of snowfall days is January (21.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
New Haven, VT
- Average daylight in December: 8h and 5min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in December: 3h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 3h and 0min).
Average sunshine days in December
New Haven, VT
- Average sunshine days in December: 7.5 days
The month with the most sunshine days is September (14.6 days).
The month with the least sunshine days is February (5.7 days).
Average UV index in December
New Haven, VT
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
New Haven, VT
- Average cloud cover in December: 66
The month with the most cloud cover is February (Cloud cover 70).
The month with the least cloud cover is July (Cloud cover 36).
Average visibility in December
New Haven, VT
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January, February and March (4mi).
New Haven, Vermont, USA
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