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
A moderate decline in the average high-temperature is seen during December, decreasing from a wintry 39.6°F (4.2°C) in November to a subzero cold 28.6°F (-1.9°C). Randolph experiences a mean temperature of 17.8°F (-7.9°C) during December nights.Humidity
The average relative humidity in December is 84%.Rainfall
In Randolph, in December, it is raining for 12.5 days, with typically 2.72" (69mm) of accumulated precipitation. Throughout the year, there are 168.4 rainfall days, and 30.47" (774mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Randolph, in December, during 18.4 snowfall days, 9.49" (241mm) of snow is typically accumulated. Throughout the year, there are 96.4 snowfall days, and 60.94" (1548mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 8h and 54min of daylight.On the first day of the month, sunrise is at 7:01 am and sunset at 4:07 pm. On the last day of December, sunrise is at 7:21 am and sunset at 4:15 pm EST.
Sunshine
In Randolph, the average sunshine in December is 4h.UV index
In Randolph, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum UV index, 2 during December, leads to the following recommendations:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
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 in Randolph?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Randolph have in December?
When are sunrise and sunset in December?
How many hours of sunshine does Randolph have in December?
What is the UV index intensity in December?
Average temperature in December
Randolph, NH
- Average high temperature in December: 28.6°F
The warmest month (with the highest average high temperature) is July (75.6°F).
The month with the lowest average high temperature is January (23.2°F).
- Average low temperature in December: 17.8°F
The month with the highest average low temperature is July (53.6°F).
The coldest month (with the lowest average low temperature) is January (9.9°F).
Average pressure in December
Randolph, 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
Randolph, NH
- Average wind speed in December: 6.6mph
The windiest months (with the highest average wind speed) are January and February (7.1mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in December
Randolph, NH
- Average humidity in December: 84%
The months with the highest relative humidity are January and February (88%).
The month with the lowest relative humidity is May (77%).
Average rainfall in December
Randolph, NH
- Average rainfall in December: 2.72"
The wettest month (with the highest rainfall) is October (3.43").
The driest month (with the least rainfall) is September (1.85").
Average rainfall days in December
Randolph, NH
- Average rainfall days in December: 12.5 days
The month with the highest number of rainy days is October (17.5 days).
The month with the least rainy days is January (9.3 days).
Average snowfall in December
Randolph, NH
- Average snowfall in December: 9.49"
The month with the highest snowfall is February (12.8").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Randolph, NH
- Average snowfall days in December: 18.4 days
The month with the highest number of snowfall days is January (19.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Randolph, NH
- Average daylight in December: 8h and 5min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in December: 4h and 0min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is February (Average sunshine: 3h and 36min).
Average sunshine days in December
Randolph, NH
- Average sunshine days in December: 8.3 days
The month with the most sunshine days is September (14.4 days).
The month with the least sunshine days is February (6.9 days).
Average UV index in December
Randolph, NH
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 5).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in December
Randolph, NH
- Average cloud cover in December: 61
The month with the most cloud cover is February (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 40).
Average visibility in December
Randolph, NH
- Average visibility in December: 4mi
The months with the highest visibility are May, June, July and November (5mi).
The months with the lowest visibility are January, February, March, April, August, September, October and December (4mi).
Randolph, New Hampshire, USA
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