December weather forecastGreenville, NH
December
Weather in December
December, the first month of the winter in Greenville, is still a cold month, with temperature in the range of an average high of 33.6°F (0.9°C) and an average low of 23°F (-5°C).Temperature
December comes with a drop in the average high-temperature, falling from November's frosty 44.8°F (7.1°C) to an icy 33.6°F (0.9°C). Greenville records a consistent low-temperature of 23°F (-5°C) during December nights.Humidity
The average relative humidity in December is 81%.Rainfall
In Greenville, in December, during 7.5 rainfall days, 1.02" (26mm) of precipitation is typically accumulated. In Greenville, during the entire year, the rain falls for 113.8 days and collects up to 12.44" (316mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Greenville, in December, snow falls for 7.5 days, with typically accumulated 3.03" (77mm) of snow. Throughout the year, in Greenville, there are 45.3 snowfall days, and 18.78" (477mm) of snow is accumulated.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 6:58 am and sunset at 4:14 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 4:23 pm EST.
Sunshine
The average sunshine in December is 4.6h.UV index
The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The UV index of 2 during December leads to these advisories:
Children necessitate constant protection from sunlight, unlike the majority, who can remain under the sun for about an hour without burning. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Greenville, NH
- Average high temperature in December: 33.6°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (28.6°F).
- Average low temperature in December: 23°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 (16°F).
Average pressure in December
Greenville, NH
- Average pressure in December: 30.04"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
Greenville, NH
- Average wind speed in December: 7.8mph
The windiest month (with the highest average wind speed) is January (8.4mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in December
Greenville, NH
- Average humidity in December: 81%
The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is April (73%).
Average rainfall in December
Greenville, NH
- Average rainfall in December: 1.02"
The wettest month (with the highest rainfall) is July (1.34").
The driest month (with the least rainfall) is September (0.71").
Average rainfall days in December
Greenville, NH
- Average rainfall days in December: 7.5 days
The month with the highest number of rainy days is May (13.5 days).
The month with the least rainy days is February (4.2 days).
Average snowfall in December
Greenville, NH
- Average snowfall in December: 3.03"
The month with the highest snowfall is November (3.9").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Greenville, NH
- Average snowfall days in December: 7.5 days
The month with the highest number of snowfall days is February (9.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Greenville, 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 36min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).
Average sunshine days in December
Greenville, NH
- Average sunshine days in December: 19.5 days
The month with the most sunshine days is January (20.3 days).
The month with the least sunshine days is June (14.3 days).
Average UV index in December
Greenville, NH
- Average UV index in December: 2
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in December
Greenville, NH
- Average cloud cover in December: 51
The month with the most cloud cover is March (Cloud cover 53).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility in December
Greenville, 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).
