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
As November transitions to December, the average high-temperature falls from an icy 39.4°F (4.1°C) to a subzero cold 28.2°F (-2.1°C). Littleton cools down to an average low-temperature of 18.1°F (-7.7°C) throughout the month of December.Humidity
The average relative humidity in December is 86%.Rainfall
In Littleton, New Hampshire, during December, the rain falls for 10.6 days and regularly aggregates up to 2.48" (63mm) of precipitation. Throughout the year, in Littleton, there are 164.3 rainfall days, and 29.45" (748mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Littleton, in December, snow falls for 19 days, with typically accumulated 8.23" (209mm) of snow. Throughout the year, there are 99.6 snowfall days, and 57.68" (1465mm) of snow is accumulated.Daylight
With an average of 8h and 54min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:03 am and sunset at 4:09 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 4:18 pm EST.
Sunshine
In Littleton, the average sunshine in December is 3.4h.UV index
January, February and December, with an average maximum UV index of 1, are months with the lowest UV index in Littleton, New Hampshire. A UV Index reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.Note: An average UV index of 1 in December transforms into this advice:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Frequently asked questions
How cold is December in Littleton?
What is the average humidity in December in Littleton?
How many days does it rain in December in Littleton?
How much does it snow in Littleton in December?
What is the month with the shortest days in Littleton?
What is the average length of the day in December in Littleton?
What time are sunrise and sunset in December in Littleton?
How long on average sun shines in December in Littleton?
When is the lowest UV index in Littleton?
What is the UV index reading in December in Littleton?
Average temperature in December
Littleton, NH
- Average high temperature in December: 28.2°F
The warmest month (with the highest average high temperature) is July (76.3°F).
The month with the lowest average high temperature is January (22.5°F).
- Average low temperature in December: 18.1°F
The month with the highest average low temperature is July (54.1°F).
The coldest month (with the lowest average low temperature) is January (9.3°F).
Average pressure in December
Littleton, NH
- 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
Littleton, NH
- Average wind speed in December: 5.8mph
The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in December
Littleton, NH
- Average humidity in December: 86%
The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is May (76%).
Average rainfall in December
Littleton, NH
- Average rainfall in December: 2.48"
The wettest month (with the highest rainfall) is October (2.91").
The driest month (with the least rainfall) is September (2.09").
Average rainfall days in December
Littleton, NH
- Average rainfall days in December: 10.6 days
The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is February (6.7 days).
Average snowfall in December
Littleton, NH
- Average snowfall in December: 8.23"
The month with the highest snowfall is February (13.58").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Littleton, NH
- Average snowfall days in December: 19 days
The month with the highest number of snowfall days is January (21.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Littleton, NH
- Average daylight in December: 8h and 5min
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 2min
The month with the most sunshine is August (Average sunshine: 9h and 54min).
The month with the least sunshine is February (Average sunshine: 3h and 0min).
Average sunshine days in December
Littleton, NH
- Average sunshine days in December: 8.7 days
The month with the most sunshine days is September (14.5 days).
The month with the least sunshine days is February (5.9 days).
Average UV index in December
Littleton, NH
- 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
Littleton, NH
- Average cloud cover in December: 67
The month with the most cloud cover is February (Cloud cover 71).
The months with the least cloud cover are July and August (Cloud cover 39).
Average visibility in December
Littleton, NH
- Average visibility in December: 4mi
The months with the highest visibility are April, May, June, July, August, October and November (5mi).
The months with the lowest visibility are January, February, March, September and December (4mi).
Littleton, New Hampshire, USA
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