December weather forecastLyndon, VT
December
Weather in December
December in Lyndon is synonymous with harsh winters. The distinct change occurs with snowfall reaching 8.46" (215mm), a rise from November's snowfall. Short daylight hours and a reduced number of sunshine hours create a typical winter environment. As the month progresses, the temperature drops further contributing to a dominant winter landscape. The whistling winds bundle up the season's attributes, ensuring an intense cold and frozen landscape for year's end.Temperature
Lyndon's weather in December involves a decrease in the average high-temperature, moving down from November's icy 39.2°F (4°C) to a subzero cold 27.7°F (-2.4°C). During December nights, Lyndon witnesses a consistent average temperature of 17.6°F (-8°C).Humidity
In December, the average relative humidity is 86%.Rainfall
In Lyndon, in December, it is raining for 9.5 days, with typically 2.44" (62mm) of accumulated precipitation. Throughout the year, there are 160.9 rainfall days, and 30.04" (763mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Lyndon, Vermont, in December, during 20.4 snowfall days, 8.46" (215mm) of snow is typically accumulated. Throughout the year, there are 108 snowfall days, and 60.35" (1533mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 8h and 54min of daylight.On the first day of December, sunrise is at 7:05 am and sunset at 4:09 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 4:18 pm EST.
Sunshine
In December, the average sunshine is 3.2h.UV index
January, February and December, with an average maximum UV index of 1, are months with the lowest UV index in Lyndon. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 1 during December translates into the following directions:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Lyndon, VT
- Average high temperature in December: 27.7°F
The warmest month (with the highest average high temperature) is July (76.5°F).
The month with the lowest average high temperature is January (22.5°F).
- Average low temperature in December: 17.6°F
The month with the highest average low temperature is July (54.3°F).
The coldest month (with the lowest average low temperature) is January (9.1°F).
Average pressure in December
Lyndon, VT
- Average pressure in December: 30.04"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Lyndon, VT
- Average wind speed in December: 6.2mph
The windiest month (with the highest average wind speed) is April (6.9mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in December
Lyndon, VT
- Average humidity in December: 86%
The months with the highest relative humidity are January and February (90%).
The month with the lowest relative humidity is May (76%).
Average rainfall in December
Lyndon, VT
- Average rainfall in December: 2.44"
The wettest month (with the highest rainfall) is October (2.99").
The driest months (with the least rainfall) are August and September (2.13").
Average rainfall days in December
Lyndon, VT
- Average rainfall days in December: 9.5 days
The month with the highest number of rainy days is July (19.1 days).
The month with the least rainy days is January (6.1 days).
Average snowfall in December
Lyndon, VT
- Average snowfall in December: 8.46"
The month with the highest snowfall is February (13.86").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Lyndon, VT
- Average snowfall days in December: 20.4 days
The month with the highest number of snowfall days is January (22.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Lyndon, VT
- Average daylight in December: 8h and 54min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in December: 3h and 12min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is February (Average sunshine: 2h and 36min).
Average sunshine days in December
Lyndon, VT
- Average sunshine days in December: 7.5 days
The month with the most sunshine days is September (15.4 days).
The month with the least sunshine days is February (5 days).
Average UV index in December
Lyndon, VT
- Average UV index in December: 1
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover in December
Lyndon, VT
- Average cloud cover in December: 70
The month with the most cloud cover is February (Cloud cover 75).
The month with the least cloud cover is August (Cloud cover 39).
Average visibility in December
Lyndon, VT
- Average visibility in December: 4mi
The months with the highest visibility are April, May, June, July, August, September, October and November (5mi).
The months with the lowest visibility are January, February, March and December (4mi).
