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 transition into December in Hanover involves a decrease in the average high-temperature, falling from an icy 41.9°F (5.5°C) in November to a subzero cold 30.7°F (-0.7°C). Throughout the month of December, Hanover witnesses an average temperature of 20.8°F (-6.2°C).Humidity
In December, the average relative humidity in Hanover is 83%.Rainfall
In Hanover, in December, it is raining for 10.9 days, with typically 2.48" (63mm) of accumulated precipitation. In Hanover, during the entire year, the rain falls for 156.9 days and collects up to 28.23" (717mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Hanover, in December, during 13.5 snowfall days, 6.85" (174mm) of snow is typically accumulated. In Hanover, during the entire year, snow falls for 75.5 days and aggregates up to 40.83" (1037mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 0min of daylight.On the first day of December in Hanover, New Hampshire, sunrise is at 7:03 am and sunset at 4:13 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 4:22 pm EST.
Sunshine
The average sunshine in December is 4h.UV index
The months with the lowest UV index in Hanover are February and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum UV index of 1 during December translates into these guidelines:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Frequently asked questions
How cold is December in Hanover?
What is the average humidity in December in Hanover?
How much does it rain in Hanover in December?
How many days does it snow in December in Hanover?
What is the month with the shortest days in Hanover?
What is the average length of the day in December in Hanover?
When is the sunrise / sunset in December in Hanover?
How long on average sun shines in December in Hanover?
When is the lowest UV index in Hanover?
What is the UV index reading in December in Hanover?
Average temperature in December
Hanover, NH
- Average high temperature in December: 30.7°F
The warmest month (with the highest average high temperature) is July (77.7°F).
The month with the lowest average high temperature is January (25°F).
- Average low temperature in December: 20.8°F
The month with the highest average low temperature is July (56.5°F).
The coldest month (with the lowest average low temperature) is January (12.6°F).
Average pressure in December
Hanover, 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 (29.91"Hg).
Average wind speed in December
Hanover, NH
- Average wind speed in December: 6.8mph
The windiest month (with the highest average wind speed) is April (7.4mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in December
Hanover, NH
- Average humidity in December: 83%
The months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is May (75%).
Average rainfall in December
Hanover, NH
- Average rainfall in December: 2.48"
The wettest month (with the highest rainfall) is October (2.99").
The driest month (with the least rainfall) is September (1.85").
Average rainfall days in December
Hanover, NH
- Average rainfall days in December: 10.9 days
The month with the highest number of rainy days is July (17.2 days).
The month with the least rainy days is February (7.9 days).
Average snowfall in December
Hanover, NH
- Average snowfall in December: 6.85"
The month with the highest snowfall is February (11.57").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Hanover, NH
- Average snowfall days in December: 13.5 days
The month with the highest number of snowfall days is January (16.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Hanover, NH
- Average daylight in December: 9h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in December: 4h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 3h and 36min).
Average sunshine days in December
Hanover, NH
- Average sunshine days in December: 12.3 days
The month with the most sunshine days is September (17.2 days).
The month with the least sunshine days is February (9.8 days).
Average UV index in December
Hanover, NH
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are February and December (UV index 1).
Average cloud cover in December
Hanover, NH
- Average cloud cover in December: 59
The month with the most cloud cover is February (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 37).
Average visibility in December
Hanover, NH
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, July, August, October, November and December (5mi).
The months with the lowest visibility are January, February, March and September (4mi).
Hanover, New Hampshire, USA
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