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
Arrival of December comes with a reduction in the average high-temperature, falling from a wintry 40.8°F (4.9°C) in November to a subzero cold 29.3°F (-1.5°C). The nighttime temperature in Jackson, during December, averages of 18.9°F (-7.3°C).Humidity
In December, the average relative humidity is 83%.Rainfall
In Jackson, in December, it is raining for 5.8 days, with typically 1.02" (26mm) of accumulated precipitation. Throughout the year, in Jackson, there are 90.5 rainfall days, and 11.61" (295mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Jackson, in December, snow falls for 8.3 days, with typically accumulated 2.76" (70mm) of snow. Throughout the year, in Jackson, there are 41.7 snowfall days, and 19.96" (507mm) of snow is accumulated.Daylight
The month with the shortest days in Jackson is December, with an average of 8h and 54min of daylight.On the first day of the month, sunrise is at 7:00 am and sunset at 4:07 pm. On the last day of December, sunrise is at 7:19 am and sunset at 4:16 pm EST.
Sunshine
The average sunshine in December in Jackson, New Hampshire, is 4.5h.UV index
The months with the lowest UV index are February and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for average individuals.Note: An average maximum UV index of 1 in December leads to these recommendations:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Frequently asked questions
How cold is December in Jackson?
What is the average humidity in December in Jackson?
How much does it rain in Jackson in December?
How much does it snow in Jackson in December?
What is the month with the shortest days in Jackson?
How many hours of daylight does Jackson have in December?
When is the sunrise / sunset in December in Jackson?
How long on average sun shines in December in Jackson?
When is the lowest UV index in Jackson?
What is the UV index reading in December in Jackson?
Average temperature in December
Jackson, NH
- Average high temperature in December: 29.3°F
The warmest month (with the highest average high temperature) is July (76.3°F).
The month with the lowest average high temperature is January (24.3°F).
- Average low temperature in December: 18.9°F
The month with the highest average low temperature is July (55.4°F).
The coldest month (with the lowest average low temperature) is January (10.8°F).
Average pressure in December
Jackson, 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 (29.91"Hg).
Average wind speed in December
Jackson, NH
- Average wind speed in December: 7mph
The windiest months (with the highest average wind speed) are January and February (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in December
Jackson, NH
- Average humidity in December: 83%
The months with the highest relative humidity are January and February (87%).
The month with the lowest relative humidity is May (77%).
Average rainfall in December
Jackson, NH
- Average rainfall in December: 1.02"
The wettest months (with the highest rainfall) are April and October (1.46").
The driest month (with the least rainfall) is September (0.39").
Average rainfall days in December
Jackson, NH
- Average rainfall days in December: 5.8 days
The months with the highest number of rainy days are May and July (10.3 days).
The month with the least rainy days is February (3.7 days).
Average snowfall in December
Jackson, NH
- Average snowfall in December: 2.76"
The month with the highest snowfall is February (4.53").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Jackson, NH
- Average snowfall days in December: 8.3 days
The month with the highest number of snowfall days is February (8.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Jackson, NH
- Average daylight in December: 8h and 5min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in December: 4h and 3min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).
Average sunshine days in December
Jackson, NH
- Average sunshine days in December: 19.8 days
The month with the most sunshine days is January (22.6 days).
The month with the least sunshine days is June (18.2 days).
Average UV index in December
Jackson, NH
- Average UV index in December: 1
The months with the highest UV index are 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
Jackson, NH
- Average cloud cover in December: 53
The month with the most cloud cover is February (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 38).
Average visibility in December
Jackson, NH
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, July, August, November and December (5mi).
The months with the lowest visibility are January, February, March, September and October (4mi).
Jackson, New Hampshire, USA
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