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
Londonderry's December weather shows a moderate shift in high-temperatures, falling from November's wintry 42.1°F (5.6°C) to a subzero cold 30.9°F (-0.6°C). The temperature in Londonderry lowers to an average of 21°F (-6.1°C) during December nights.Humidity
The average relative humidity in December in Londonderry is 84%.Rainfall
In December, in Londonderry, the rain falls for 9.5 days. Throughout December, 1.18" (30mm) of precipitation is accumulated. Throughout the year, in Londonderry, Vermont, there are 133 rainfall days, and 12.95" (329mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Londonderry, Vermont. In Londonderry, Vermont, in December, snow falls for 11.5 days, with typically accumulated 3.19" (81mm) of snow. In Londonderry, during the entire year, snow falls for 62.9 days and aggregates up to 18.11" (460mm) of snow.Daylight
With an average of 9h and 0min of daylight, December has the shortest days of the year in Londonderry.On the first day of December in Londonderry, sunrise is at 7:04 am and sunset at 4:16 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 4:25 pm EST.
Sunshine
The average sunshine in December is 4h.UV index
February and December, with an average maximum UV index of 1, are months with the lowest UV index in Londonderry. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum daily UV index of 1 during December morphs into the following directions:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Londonderry in December?
What is the average humidity in December in Londonderry?
How many days does it rain in December in Londonderry?
How much does it snow in Londonderry in December?
What is the month with the shortest days in Londonderry?
How many hours of daylight does Londonderry have in December?
When are sunrise and sunset in December in Londonderry?
How long on average sun shines in December in Londonderry?
What is the month with the lowest UV index in Londonderry?
What is the UV index intensity in December in Londonderry?
Average temperature in December
Londonderry, VT
- Average high temperature in December: 30.9°F
The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (25.2°F).
- Average low temperature in December: 21°F
The month with the highest average low temperature is July (57°F).
The coldest month (with the lowest average low temperature) is January (12.9°F).
Average pressure in December
Londonderry, 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
Londonderry, VT
- Average wind speed in December: 7.5mph
The windiest month (with the highest average wind speed) is January (7.9mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in December
Londonderry, VT
- Average humidity in December: 84%
The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are April and May (76%).
Average rainfall in December
Londonderry, VT
- Average rainfall in December: 1.18"
The wettest months (with the highest rainfall) are April and October (1.26").
The driest month (with the least rainfall) is March (0.79").
Average rainfall days in December
Londonderry, VT
- Average rainfall days in December: 9.5 days
The month with the highest number of rainy days is May (14.6 days).
The months with the least rainy days are January and February (7.3 days).
Average snowfall in December
Londonderry, VT
- Average snowfall in December: 3.19"
The month with the highest snowfall is February (4.02").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Londonderry, VT
- Average snowfall days in December: 11.5 days
The month with the highest number of snowfall days is January (14.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Londonderry, VT
- Average daylight in December: 9h and 0min
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 0min).
- Average sunshine in December: 4h and 0min
The months with the most sunshine are July and August (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 3h and 36min).
Average sunshine days in December
Londonderry, VT
- Average sunshine days in December: 15.6 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is February (11.7 days).
Average UV index in December
Londonderry, 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 February and December (UV index 1).
Average cloud cover in December
Londonderry, VT
- Average cloud cover in December: 58
The month with the most cloud cover is February (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 37).
Average visibility in December
Londonderry, VT
- Average visibility in December: 5mi
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (5mi).
The month with the lowest visibility is February (4mi).
Londonderry, Vermont, USA
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