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
December brings a drop in Brattleboro's average high-temperature, falling from a chilly 44.4°F (6.9°C) in November to an icy 33.4°F (0.8°C). Brattleboro, in December, observes a steady average low-temperature of 22.6°F (-5.2°C).Humidity
In Brattleboro, the average relative humidity in December is 82%.Rainfall
In Brattleboro, during December, the rain falls for 6.6 days and regularly aggregates up to 0.75" (19mm) of precipitation. In Brattleboro, during the entire year, the rain falls for 91.5 days and collects up to 7.8" (198mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. In Brattleboro, in December, snow falls for 4.8 days, with typically accumulated 1.3" (33mm) of snow. Throughout the year, there are 28.8 snowfall days, and 7.17" (182mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 6min of daylight.On the first day of the month, sunrise is at 7:01 am and sunset at 4:17 pm. On the last day of December, sunrise is at 7:20 am and sunset at 4:26 pm EST.
Sunshine
The average sunshine in December is 4.9h.UV index
The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for average individuals.Note: In December, the UV index of 1 transforms into the following advice:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. To cut down UV radiation exposure by about half, sport a wide-brim hat. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December in Brattleboro?
How many days does it rain in December?
How much does it snow in Brattleboro 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 in Brattleboro?
How many hours of sunshine does Brattleboro have in December?
What is the month with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Brattleboro, VT
- Average high temperature in December: 33.4°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in December: 22.6°F
The month with the highest average low temperature is July (58.8°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).
Average pressure in December
Brattleboro, VT
- 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 (29.92"Hg).
Average wind speed in December
Brattleboro, VT
- Average wind speed in December: 7.4mph
The windiest months (with the highest average wind speed) are January, February and March (7.8mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in December
Brattleboro, VT
- Average humidity in December: 82%
The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is April (74%).
Average rainfall in December
Brattleboro, VT
- Average rainfall in December: 0.75"
The wettest month (with the highest rainfall) is November (0.87").
The driest month (with the least rainfall) is September (0.43").
Average rainfall days in December
Brattleboro, VT
- Average rainfall days in December: 6.6 days
The month with the highest number of rainy days is May (10 days).
The months with the least rainy days are January and February (4.3 days).
Average snowfall in December
Brattleboro, VT
- Average snowfall in December: 1.3"
The month with the highest snowfall is January (1.81").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Brattleboro, VT
- Average snowfall days in December: 4.8 days
The month with the highest number of snowfall days is February (7.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Brattleboro, VT
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 4h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).
Average sunshine days in December
Brattleboro, VT
- Average sunshine days in December: 21.2 days
The month with the most sunshine days is January (21.9 days).
The month with the least sunshine days is July (17.6 days).
Average UV index in December
Brattleboro, VT
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Brattleboro, VT
- Average cloud cover in December: 48
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in December
Brattleboro, VT
- Average visibility in December: 6mi
The months with the highest visibility are April, November and December (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September and October (5mi).
Brattleboro, Vermont, USA
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