December weather forecastGlenwood, NJ
December
Weather in December
December, the first month of the winter in Glenwood, is also a wintry month, with temperature in the range of an average high of 38.7°F (3.7°C) and an average low of 26.8°F (-2.9°C).Temperature
December's arrival coincides with a drop in the average high-temperature, decreasing from November's frosty 48°F (8.9°C) to a cold 38.7°F (3.7°C). Throughout December, Glenwood experiences a low-temperature average of 26.8°F (-2.9°C).Humidity
February, October and December, with an average relative humidity of 82%, are the most humid months in Glenwood, New Jersey.Rainfall
In Glenwood, New Jersey, in December, it is raining for 9.4 days, with typically 2.52" (64mm) of accumulated precipitation. Throughout the year, there are 149.5 rainfall days, and 28.23" (717mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Glenwood, New Jersey, during December, snow falls for 5.5 days and regularly aggregates up to 3.5" (89mm) of snow. Throughout the year, in Glenwood, there are 30.6 snowfall days, and 19.53" (496mm) of snow is accumulated.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year.On the first day of December in Glenwood, sunrise is at 7:04 am and sunset at 4:29 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 4:39 pm EST.
Sunshine
The average sunshine in December in Glenwood is 4.6h.UV index
With an average maximum UV index of 1, December is the month with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The daily high UV index of 1 during December translates into the following recommendations:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. Around midday, solar radiation is most harmful; hence, exposure should be limited. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Glenwood, NJ
- Average high temperature in December: 38.7°F
The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (32.5°F).
- Average low temperature in December: 26.8°F
The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure in December
Glenwood, NJ
- Average pressure in December: 30.08"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Glenwood, NJ
- Average wind speed in December: 7mph
The windiest month (with the highest average wind speed) is March (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in December
Glenwood, NJ
- Average humidity in December: 82%
The months with the highest relative humidity are February, October and December (82%).
The month with the lowest relative humidity is April (76%).
Average rainfall in December
Glenwood, NJ
- Average rainfall in December: 2.52"
The wettest month (with the highest rainfall) is July (3.31").
The driest month (with the least rainfall) is January (1.61").
Average rainfall days in December
Glenwood, NJ
- Average rainfall days in December: 9.4 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (6.3 days).
Average snowfall in December
Glenwood, NJ
- Average snowfall in December: 3.5"
The month with the highest snowfall is February (4.92").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Glenwood, NJ
- Average snowfall days in December: 5.5 days
The month with the highest number of snowfall days is February (7.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Glenwood, NJ
- Average daylight in December: 9h and 18min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 4h and 36min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).
Average sunshine days in December
Glenwood, NJ
- Average sunshine days in December: 17.8 days
The months with the most sunshine days are January and November (18.8 days).
The month with the least sunshine days is July (11.8 days).
Average UV index in December
Glenwood, NJ
- Average UV index in December: 1
The month with the highest UV index is June (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Glenwood, NJ
- Average cloud cover in December: 51
The month with the most cloud cover is February (Cloud cover 53).
The months with the least cloud cover are July and August (Cloud cover 37).
Average visibility in December
Glenwood, NJ
- Average visibility in December: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
