December weather forecastSomersworth, NH
December
Weather in December
Somersworth experiences the full brunt of winter in December. From highs of 33.4°F (0.8°C) in November, temperatures drop significantly, plunging to a chilly average low of 24.6°F (-4.1°C). Against the backdrop of a crisp winter sky, chimneys puff away, offering a stark contrast to the winter's cold. Yet, despite the frigid conditions, the holiday spirit pervades, rendering a magical, almost ethereal quality to the city, as it wraps up another year under a blanket of gleaming snow.Temperature
Somersworth's December weather features a mild decline in high-temperatures, reducing from a chilly 46°F (7.8°C) in November to a wintry 35.6°F (2°C). December in Somersworth generally records an average low-temperature of 24.6°F (-4.1°C).Humidity
In Somersworth, the average relative humidity in December is 80%.Rainfall
The months with the most rainfall are October and December, with an average 3.11" (79mm) of precipitation.Snowfall
Months with snowfall in Somersworth, New Hampshire, are January through May, October through December. The month with the most snowfall in Somersworth is December, when snow falls for 7.2 days and typically aggregates up to 6.69" (170mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 0min of daylight.On the first day of the month, sunrise is at 6:56 am and sunset at 4:09 pm. On the last day of December, sunrise is at 7:15 am and sunset at 4:18 pm EST.
Sunshine
In December, the average sunshine is 4.8h.UV index
The months with the lowest UV index in Somersworth, New Hampshire, are January through March, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for average individuals.Note: The UV index of 2 during December leads to these advisories:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. 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. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Somersworth, NH
- Average high temperature in December: 35.6°F
The warmest month (with the highest average high temperature) is July (78.3°F).
The month with the lowest average high temperature is January (29.7°F).
- Average low temperature in December: 24.6°F
The month with the highest average low temperature is July (60.3°F).
The coldest month (with the lowest average low temperature) is January (17.4°F).
Average pressure in December
Somersworth, 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 (29.92"Hg).
Average wind speed in December
Somersworth, NH
- Average wind speed in December: 8.5mph
The windiest month (with the highest average wind speed) is January (9.3mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).
Average humidity in December
Somersworth, NH
- Average humidity in December: 80%
The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is April (75%).
Average rainfall in December
Somersworth, NH
- Average rainfall in December: 3.11"
The wettest months (with the highest rainfall) are October and December (3.11").
The driest month (with the least rainfall) is September (1.5").
Average rainfall days in December
Somersworth, NH
- Average rainfall days in December: 10 days
The month with the highest number of rainy days is May (15.1 days).
The month with the least rainy days is February (6.8 days).
Average snowfall in December
Somersworth, NH
- Average snowfall in December: 6.69"
The month with the highest snowfall is December (6.69").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Somersworth, NH
- Average snowfall days in December: 7.2 days
The month with the highest number of snowfall days is January (10.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Somersworth, 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 48min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in December
Somersworth, NH
- Average sunshine days in December: 16.1 days
The month with the most sunshine days is November (16.9 days).
The month with the least sunshine days is April (13.3 days).
Average UV index in December
Somersworth, NH
- Average UV index in December: 2
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
Somersworth, NH
- Average cloud cover in December: 47
The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in December
Somersworth, NH
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, October, November and December (6mi).
The months with the lowest visibility are May, June, July, August and September (5mi).
