December weather forecastHampstead, NH

December

Weather in December

December brings in the chill of winter to Hampstead, with shorter daylight hours and cooler temperatures. The town transitions into a winter wonderland, showcasing twinkling Christmas lights against the freshly fallen snow. Warm indoor activities such as firesides, holiday preparations and winter sports become a heartwarming endeavor. Snowfall makes a definitive return with an increased total of.71" (1803mm) of snowfall setting up a white backdrop. As the townfolk prepare to celebrate the holiday season, the weather certainly falls in line to create that idyllic winter scene, setting the stage for a picturesque end to the year.

Temperature

December indicates a shift in the average high-temperature, from November's chilly 48.2°F (9°C) to an icy 37.9°F (3.3°C). In the month of December, an average of 27.7°F (-2.4°C) marks the low-temperature.

Humidity

In Hampstead, the average relative humidity in December is 77%.

Rainfall

In December, the rain falls for 4.8 days. Throughout December, 0.51" (13mm) of precipitation is accumulated. In Hampstead, during the entire year, the rain falls for 78.3 days and collects up to 5.43" (138mm) of precipitation.

Snowfall

January through May, November and December are months with snowfall. December is the month with the most snowfall. Snow falls for 2.6 days and accumulates 0.71" (18mm) of snow.

Daylight

The month with the shortest days is December, with an average of 9h and 6min of daylight.
On the first day of December, sunrise is at 6:56 am and sunset at 4:11 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 4:20 pm EST.

Sunshine

In December, the average sunshine is 4.9h.

UV index

The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum daily UV index, 2 in December, converts into the following recommendations:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.

Updated: Aug 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

December temperatures vary between a high-temperature of 37.9°F (3.3°C) and a low-temperature of 27.7°F (-2.4°C). The average heat index (a.k.a. 'feels like', 'real feel'), which combines air temperature and relative humidity, in July is evaluated at 84.2°F (29°C).

The average relative humidity in December is 77%.

In December, in Hampstead, New Hampshire, the rain falls for 4.8 days. Throughout December, 0.51" (13mm) of precipitation is accumulated.

The month with the most snowfall is December, when snow falls for 2.6 days and typically aggregates up to 0.71" (18mm) of snow.

In Hampstead, in December, snow falls for 2.6 days, with typically accumulated 0.71" (18mm) of snow.

December has the shortest days of the year, with an average of 9h and 6min of daylight.

In Hampstead, the average day length in December is 9h and 5min.

In December, on the first day of the month, sunrise is at 6:56 am and sunset at 4:11 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 4:20 pm EST.

The average sunshine duration in December is 4.9h.

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index.

In Hampstead, the average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

48.2°F

37.9°F

32.5°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

8.7mph

9.5mph

10.1mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

22.6

24.5

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Hampstead, NH

Average high temperature in December: 37.9°F

The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (32.5°F).

Average low temperature in December: 27.7°F

The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).

Average pressure in December
Hampstead, 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
Hampstead, NH

Average wind speed in December: 8.9mph

The windiest month (with the highest average wind speed) is January (9.5mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).

Average humidity in December
Hampstead, NH

Average humidity in December: 77%

The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is April (71%).

Average rainfall in December
Hampstead, NH

Average rainfall in December: 0.51"

The wettest month (with the highest rainfall) is November (0.67").
The driest month (with the least rainfall) is September (0.2").

Average rainfall days in December
Hampstead, NH

Average rainfall days in December: 4.8 days

The month with the highest number of rainy days is July (8.8 days).
The month with the least rainy days is January (3.6 days).

Average snowfall in December
Hampstead, NH

Average snowfall in December: 0.71"

The month with the highest snowfall is December (0.71").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in December
Hampstead, NH

Average snowfall days in December: 2.6 days

The month with the highest number of snowfall days is February (5.3 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

Average daylight in December /
Average sunshine in December
Hampstead, NH

Average daylight in December: 9h and 6min

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 6min).

Average sunshine in December: 4h and 54min

The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

Average sunshine days in December
Hampstead, NH

Average sunshine days in December: 23 days

The month with the most sunshine days is January (24.5 days).
The month with the least sunshine days is April (18.4 days).

Average UV index in December
Hampstead, NH

Average UV index in December: 2

The months with the highest UV index are June, 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
Hampstead, 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 31).

Average visibility in December
Hampstead, NH

Average visibility in December: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).