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 arrival of December indicates a decrease in the average high-temperature, moving from a chilly 44.1°F (6.7°C) in November to a cold 32.9°F (0.5°C). Charlestown's nighttime temperature in December falls to an average of 22.3°F (-5.4°C).Humidity
The average relative humidity in December in Charlestown is 82%.Rainfall
In Charlestown, in December, it is raining for 7.1 days, with typically 1.61" (41mm) of accumulated precipitation. Throughout the year, in Charlestown, there are 113.5 rainfall days, and 16.77" (426mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Charlestown. In Charlestown, in December, snow falls for 4.8 days, with typically accumulated 3.31" (84mm) of snow. In Charlestown, during the entire year, snow falls for 31 days and aggregates up to 16.22" (412mm) of snow.Daylight
December has the shortest days of the year in Charlestown, with an average of 9h and 0min of daylight.On the first day of the month, sunrise is at 7:02 am and sunset at 4:15 pm. On the last day of December, sunrise is at 7:21 am and sunset at 4:24 pm EST.
Sunshine
In December, the average sunshine is 4.8h.UV index
The months with the lowest UV index in Charlestown are January through March, October through December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the average person.Note: The daily high UV index of 2 in December translates into this advice:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. 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 Charlestown in December?
What is the average humidity in December in Charlestown?
How many days does it rain in December in Charlestown?
How much does it snow in Charlestown in December?
What is the month with the shortest days in Charlestown?
How many hours of daylight does Charlestown have in December?
When is the sunrise / sunset in December in Charlestown?
How long on average sun shines in December in Charlestown?
When is the lowest UV index in Charlestown?
How high is the UV index in December in Charlestown?
Average temperature in December
Charlestown, NH
- Average high temperature in December: 32.9°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (27.5°F).
- Average low temperature in December: 22.3°F
The month with the highest average low temperature is July (57.7°F).
The coldest month (with the lowest average low temperature) is January (14.5°F).
Average pressure in December
Charlestown, NH
- 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
Charlestown, NH
- Average wind speed in December: 7.1mph
The windiest months (with the highest average wind speed) are January, February and March (7.6mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in December
Charlestown, NH
- Average humidity in December: 82%
The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is April (74%).
Average rainfall in December
Charlestown, NH
- Average rainfall in December: 1.61"
The wettest month (with the highest rainfall) is October (1.77").
The driest months (with the least rainfall) are January and March (1.06").
Average rainfall days in December
Charlestown, NH
- Average rainfall days in December: 7.1 days
The month with the highest number of rainy days is July (12.1 days).
The month with the least rainy days is January (4.5 days).
Average snowfall in December
Charlestown, NH
- Average snowfall in December: 3.31"
The month with the highest snowfall is February (4.69").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Charlestown, NH
- Average snowfall days in December: 4.8 days
The month with the highest number of snowfall days is February (7.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Charlestown, NH
- 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 5min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).
Average sunshine days in December
Charlestown, NH
- Average sunshine days in December: 20 days
The month with the most sunshine days is November (20.5 days).
The months with the least sunshine days are April and June (16 days).
Average UV index in December
Charlestown, NH
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in December
Charlestown, NH
- Average cloud cover in December: 49
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in December
Charlestown, NH
- Average visibility in December: 5mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
Charlestown, New Hampshire, USA
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