December weather forecastGoffstown, NH
December
Weather in December
December marks the peak of winter with temperatures plunging to an average low of 23.9°F (-4.5°C). The city witnesses substantial snowfall, recording an average of 5.16" (131mm). The longer nights, heavy cloud cover, and strikingly low temperatures make December the quintessential winter month. Despite the short daylight hours, the snow provides a reflective blanket that illuminously lights up the city even in the brief periods of sunshine.Temperature
The commencement of December indicates a shift in the average high-temperature, receding from November's frosty 45.9°F (7.7°C) to a wintry 34.9°F (1.6°C). During December nights, Goffstown records an average temperature of 23.9°F (-4.5°C).Humidity
The average relative humidity in December in Goffstown is 80%.Rainfall
In December, the rain falls for 9.6 days. Throughout December, 2.52" (64mm) of precipitation is accumulated. In Goffstown, during the entire year, the rain falls for 138.6 days and collects up to 26.18" (665mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Goffstown, during December, snow falls for 7.4 days and regularly aggregates up to 5.16" (131mm) of snow. In Goffstown, during the entire year, snow falls for 42 days and aggregates up to 25.83" (656mm) of snow.Daylight
The month with the shortest days in Goffstown is December, with an average of 9h and 6min of daylight.On the first day of December, sunrise is at 6:58 am and sunset at 4:12 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 4:21 pm EST.
Sunshine
In December, the average sunshine is 4.7h.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 reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for the ordinary person.Note: The UV index of 2 during December leads to these advisories:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Goffstown, NH
- Average high temperature in December: 34.9°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (29.5°F).
- Average low temperature in December: 23.9°F
The month with the highest average low temperature is July (60.1°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).
Average pressure in December
Goffstown, NH
- Average pressure in December: 30.03"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Goffstown, NH
- Average wind speed in December: 7.5mph
The windiest month (with the highest average wind speed) is January (8mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in December
Goffstown, NH
- Average humidity in December: 80%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is April (72%).
Average rainfall in December
Goffstown, NH
- Average rainfall in December: 2.52"
The wettest month (with the highest rainfall) is October (2.95").
The driest month (with the least rainfall) is September (1.46").
Average rainfall days in December
Goffstown, NH
- Average rainfall days in December: 9.6 days
The month with the highest number of rainy days is May (14.3 days).
The month with the least rainy days is January (6.6 days).
Average snowfall in December
Goffstown, NH
- Average snowfall in December: 5.16"
The month with the highest snowfall is February (6.85").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Goffstown, NH
- Average snowfall days in December: 7.4 days
The month with the highest number of snowfall days is January (10.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Goffstown, 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 42min
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 30min).
Average sunshine days in December
Goffstown, NH
- Average sunshine days in December: 16.5 days
The month with the most sunshine days is September (16.9 days).
The month with the least sunshine days is March (12.9 days).
Average UV index in December
Goffstown, 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
Goffstown, NH
- Average cloud cover in December: 48
The month with the most cloud cover is March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in December
Goffstown, NH
- Average visibility in December: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
