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
The beginning of December marks a decrease in the average high-temperature, transitioning from a cold 39.2°F (4°C) in November to a freezing cold 27.5°F (-2.5°C). Nighttime temperatures consistently average a still subzero cold 18.1°F (-7.7°C) during December.Humidity
The average relative humidity in December is 86%.Rainfall
In Tripoli Mill, New Hampshire, in December, it is raining for 8.3 days, with typically 1.02" (26mm) of accumulated precipitation. Throughout the year, there are 126 rainfall days, and 13.66" (347mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Tripoli Mill, in December, snow falls for 17.1 days, with typically accumulated 2.95" (75mm) of snow. In Tripoli Mill, during the entire year, snow falls for 91.5 days and aggregates up to 21.85" (555mm) of snow.Daylight
With an average of 9h and 0min of daylight, December has the shortest days of the year.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, sunrise is at 7:20 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. A UV Index of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index of 1 in December converts into the following recommendations:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
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?
How many days does it rain in December?
How much does it snow in December?
What is the month with the shortest days in Tripoli Mill?
What is the average length of the day in December?
What time are sunrise and sunset in December?
How long on average sun shines in December?
What is the month with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Tripoli Mill, NH
- Average high temperature in December: 27.5°F
The warmest month (with the highest average high temperature) is July (75°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 (54.3°F).
The coldest month (with the lowest average low temperature) is January (9.7°F).
Average pressure in December
Tripoli Mill, 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
Tripoli Mill, NH
- Average wind speed in December: 6.5mph
The windiest months (with the highest average wind speed) are January and February (6.9mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).
Average humidity in December
Tripoli Mill, 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 (78%).
Average rainfall in December
Tripoli Mill, NH
- Average rainfall in December: 1.02"
The wettest month (with the highest rainfall) is April (1.5").
The driest month (with the least rainfall) is September (0.79").
Average rainfall days in December
Tripoli Mill, NH
- Average rainfall days in December: 8.3 days
The month with the highest number of rainy days is July (15.5 days).
The months with the least rainy days are January and February (5.3 days).
Average snowfall in December
Tripoli Mill, NH
- Average snowfall in December: 2.95"
The month with the highest snowfall is February (4.45").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Tripoli Mill, NH
- Average snowfall days in December: 17.1 days
The month with the highest number of snowfall days is February (18.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Tripoli Mill, 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 1min
The month with the most sunshine is August (Average sunshine: 9h and 18min).
The month with the least sunshine is February (Average sunshine: 2h and 54min).
Average sunshine days in December
Tripoli Mill, NH
- Average sunshine days in December: 12.5 days
The month with the most sunshine days is September (16.6 days).
The month with the least sunshine days is February (10.2 days).
Average UV index in December
Tripoli Mill, NH
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover in December
Tripoli Mill, NH
- Average cloud cover in December: 69
The month with the most cloud cover is February (Cloud cover 72).
The month with the least cloud cover is July (Cloud cover 44).
Average visibility in December
Tripoli Mill, 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).
Tripoli Mill, New Hampshire, USA
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