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
With December's arrival, Waterville Valley's weather changes as the average high-temperature falls from a wintry 38.7°F (3.7°C) in November to a subzero cold 28°F (-2.2°C). An average low-temperature of 17.8°F (-7.9°C) is expected during December.Humidity
In December, the average relative humidity is 85%.Rainfall
In Waterville Valley, New Hampshire, during December, the rain falls for 8.7 days and regularly aggregates up to 1.18" (30mm) of precipitation. Throughout the year, there are 132.9 rainfall days, and 13.86" (352mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Waterville Valley, in December, during 18.4 snowfall days, 5.16" (131mm) of snow is typically accumulated. In Waterville Valley, during the entire year, snow falls for 99.7 days and aggregates up to 37.05" (941mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 0min of daylight.On the first day of the month, sunrise is at 7:01 am and sunset at 4:09 pm. On the last day of December, in Waterville Valley, sunrise is at 7:20 am and sunset at 4:18 pm EST.
Sunshine
In Waterville Valley, the average sunshine in December is 3.8h.UV index
The months with the lowest UV index are January, February and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for the ordinary person.Note: During December, 1 as the daily maximum UV index converts into the following advice:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the average humidity in December?
How many days does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
How many hours of sunshine does Waterville Valley have in December?
What are the months with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Waterville Valley, NH
- Average high temperature in December: 28°F
The warmest month (with the highest average high temperature) is July (74.8°F).
The month with the lowest average high temperature is January (22.5°F).
- Average low temperature in December: 17.8°F
The month with the highest average low temperature is July (55.8°F).
The coldest month (with the lowest average low temperature) is January (9.5°F).
Average pressure in December
Waterville Valley, NH
- Average pressure in December: 30.03"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
Waterville Valley, NH
- Average wind speed in December: 6.8mph
The windiest month (with the highest average wind speed) is January (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in December
Waterville Valley, NH
- Average humidity in December: 85%
The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is May (78%).
Average rainfall in December
Waterville Valley, NH
- Average rainfall in December: 1.18"
The wettest month (with the highest rainfall) is April (1.57").
The driest month (with the least rainfall) is September (0.71").
Average rainfall days in December
Waterville Valley, NH
- Average rainfall days in December: 8.7 days
The month with the highest number of rainy days is July (16.6 days).
The month with the least rainy days is February (6.6 days).
Average snowfall in December
Waterville Valley, NH
- Average snowfall in December: 5.16"
The months with the highest snowfall are January and February (6.1").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Waterville Valley, NH
- Average snowfall days in December: 18.4 days
The month with the highest number of snowfall days is December (18.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Waterville Valley, NH
- Average daylight in December: 9h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in December: 3h and 5min
The month with the most sunshine is August (Average sunshine: 9h and 30min).
The month with the least sunshine is February (Average sunshine: 3h and 36min).
Average sunshine days in December
Waterville Valley, NH
- Average sunshine days in December: 12.5 days
The month with the most sunshine days is September (16.8 days).
The month with the least sunshine days is February (10.7 days).
Average UV index in December
Waterville Valley, 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
Waterville Valley, NH
- Average cloud cover in December: 62
The month with the most cloud cover is February (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 42).
Average visibility in December
Waterville Valley, NH
- Average visibility in December: 4mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (4mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (4mi).
Waterville Valley, New Hampshire, USA
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