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 is accompanied by a temperature decrease, with the average high-temperature shifting from a cold 40.8°F (4.9°C) in November to a freezing cold 29.3°F (-1.5°C). During December, Jackson records an average temperature of 18.9°F (-7.3°C) at night.Humidity
In Jackson, the average relative humidity in December is 83%.Rainfall
In Jackson, in December, during 5.8 rainfall days, 1.02" (26mm) of precipitation is typically accumulated. In Jackson, during the entire year, the rain falls for 90.5 days and collects up to 11.61" (295mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Jackson. In Jackson, during December, snow falls for 8.3 days and regularly aggregates up to 2.76" (70mm) of snow. In Jackson, during the entire year, snow falls for 41.7 days and aggregates up to 19.96" (507mm) of snow.Daylight
The month with the shortest days 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 is 4.5h.UV index
February and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for the average person.Note: In December, a regular UV index of 1 translates into these guidelines:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the average humidity in December?
How many days does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Jackson have in December?
When are sunrise and sunset in December?
How many hours of sunshine does Jackson have in December?
What are the months with the lowest UV index?
What is the UV index reading in December?
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
Weather forecast for your location
2. Allow the app to use your location