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 arrival of December corresponds with a temperature reduction, down from November's frosty 47.3°F (8.5°C) to a cold 36.5°F (2.5°C). Hollis experiences a nighttime temperature average of 25.7°F (-3.5°C) during December.Humidity
In December, the average relative humidity in Hollis is 79%.Rainfall
In December, the rain falls for 6.1 days. Throughout December, 0.63" (16mm) of precipitation is accumulated. Throughout the year, there are 91.2 rainfall days, and 7.24" (184mm) of precipitation is accumulated.Snowfall
Months with snowfall in Hollis are January through May, October through December. The months with the most snowfall are February and December, with an average 1.26" (32mm) of accumulated snow.Daylight
The month with the shortest days is December, with an average of 9h and 6min of daylight.On the first day of the month, sunrise is at 6:57 am and sunset at 4:13 pm. On the last day of December, sunrise is at 7:16 am and sunset at 4:22 pm EST.
Sunshine
In December, the average sunshine is 4.9h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum daily UV index of 2 in December interprets into the following recommendations:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
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 in Hollis?
How many days does it rain in December?
When does it snow the most?
How much does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December in Hollis?
How many hours of sunshine does Hollis have in December?
What are the months with the lowest UV index in Hollis?
What is the UV index reading in December?
Average temperature in December
Hollis, NH
- Average high temperature in December: 36.5°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (30.9°F).
- Average low temperature in December: 25.7°F
The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (18°F).
Average pressure in December
Hollis, 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
Hollis, NH
- Average wind speed in December: 7.6mph
The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in December
Hollis, NH
- Average humidity in December: 79%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is April (71%).
Average rainfall in December
Hollis, NH
- Average rainfall in December: 0.63"
The wettest month (with the highest rainfall) is November (0.79").
The driest month (with the least rainfall) is September (0.28").
Average rainfall days in December
Hollis, NH
- Average rainfall days in December: 6.1 days
The month with the highest number of rainy days is June (10.4 days).
The month with the least rainy days is January (3.5 days).
Average snowfall in December
Hollis, NH
- Average snowfall in December: 1.26"
The months with the highest snowfall are February and December (1.26").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Hollis, NH
- Average snowfall days in December: 3.8 days
The month with the highest number of snowfall days is February (6.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Hollis, NH
- Average daylight in December: 9h and 1min
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 5min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in December
Hollis, NH
- Average sunshine days in December: 21.8 days
The month with the most sunshine days is January (22.6 days).
The month with the least sunshine days is July (17.3 days).
Average UV index in December
Hollis, NH
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Hollis, NH
- Average cloud cover in December: 47
The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in December
Hollis, NH
- Average visibility in December: 6mi
The months with the highest visibility are January, March, April, November and December (6mi).
The months with the lowest visibility are February, May, June, July, August, September and October (5mi).
Hollis, New Hampshire, USA
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