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 start of December signals a decrease in the average high-temperature, transitioning from a cold 40.8°F (4.9°C) in November to a freezing cold 29.3°F (-1.5°C). Throughout the month of December, Glen witnesses an average low-temperature of 18.7°F (-7.4°C).Humidity
The average relative humidity in December is 82%.Rainfall
In December, the rain falls for 11.9 days. Throughout December, 3.27" (83mm) of precipitation is accumulated. In Glen, during the entire year, the rain falls for 173.8 days and collects up to 33.54" (852mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Glen, during December, snow falls for 14.7 days and regularly aggregates up to 9.21" (234mm) of snow. Throughout the year, there are 80.5 snowfall days, and 59.25" (1505mm) of snow is accumulated.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, in Glen, sunrise is at 7:19 am and sunset at 4:16 pm EST.
Sunshine
In Glen, New Hampshire, the average sunshine in December is 4.4h.UV index
February and December, with an average maximum UV index of 1, are months with the lowest UV index in Glen. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: A maximum UV index of 1 in December translates into the following recommendations:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. It's recommended to limit sun exposure when its radiation is at its peak during midday. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is 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?
What is the average length of the day in December?
When are sunrise and sunset in December?
How many hours of sunshine does Glen have in December?
What is the month with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Glen, NH
- Average high temperature in December: 29.3°F
The warmest month (with the highest average high temperature) is July (76.6°F).
The month with the lowest average high temperature is January (24.1°F).
- Average low temperature in December: 18.7°F
The month with the highest average low temperature is July (55.8°F).
The coldest month (with the lowest average low temperature) is January (10.8°F).
Average pressure in December
Glen, 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
Glen, NH
- Average wind speed in December: 7mph
The windiest month (with the highest average wind speed) is January (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in December
Glen, NH
- Average humidity in December: 82%
The months with the highest relative humidity are January and February (87%).
The months with the lowest relative humidity are May and November (77%).
Average rainfall in December
Glen, NH
- Average rainfall in December: 3.27"
The wettest month (with the highest rainfall) is April (3.7").
The driest month (with the least rainfall) is September (1.69").
Average rainfall days in December
Glen, NH
- Average rainfall days in December: 11.9 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is February (10.8 days).
Average snowfall in December
Glen, NH
- Average snowfall in December: 9.21"
The month with the highest snowfall is February (15.75").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Glen, NH
- Average snowfall days in December: 14.7 days
The month with the highest number of snowfall days is February (17.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Glen, 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 2min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).
Average sunshine days in December
Glen, NH
- Average sunshine days in December: 10.5 days
The month with the most sunshine days is September (15.4 days).
The month with the least sunshine days is February (7.7 days).
Average UV index in December
Glen, 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
Glen, NH
- Average cloud cover in December: 54
The month with the most cloud cover is February (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 38).
Average visibility in December
Glen, NH
- Average visibility in December: 5mi
The months with the highest visibility are May, June, July, August, October, November and December (5mi).
The months with the lowest visibility are January, February, March, April and September (4mi).
Glen, New Hampshire, USA
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