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
With December's onset, the average high-temperature recedes from November's chilly 48.6°F (9.2°C) to an icy 38.7°F (3.7°C). An average low-temperature of 26.8°F (-2.9°C) is observed during the December nights.Humidity
February, October and December, with an average relative humidity of 80%, are the most humid months.Rainfall
The wettest months are October and December, with an average 3.15" (80mm) of rainfall.Snowfall
Months with snowfall are January through May, October through December. In Glenham, New York, during December, snow falls for 6.5 days and regularly aggregates up to 3.54" (90mm) of snow. Throughout the year, there are 34.9 snowfall days, and 17.95" (456mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 12min of daylight.On the first day of the month, sunrise is at 7:03 am and sunset at 4:26 pm. On the last day of December, sunrise is at 7:22 am and sunset at 4:35 pm EST.
Sunshine
In Glenham, the average sunshine in December is 4.7h.UV index
With an average maximum UV index of 1, December is the month with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum UV index, 1 during December, leads to the following recommendations:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What are the most humid months?
What is the average humidity in December?
What is the rainiest month?
How many days does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Glenham have in December?
What time are sunrise and sunset in December?
How long on average sun shines in December?
What is the month with the lowest UV index in Glenham?
What is the UV index intensity in December?
Average temperature in December
Glenham, NY
- Average high temperature in December: 38.7°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (33.1°F).
- Average low temperature in December: 26.8°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 (20.5°F).
Average pressure in December
Glenham, NY
- Average pressure in December: 30.06"Hg
The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Glenham, NY
- Average wind speed in December: 6mph
The windiest month (with the highest average wind speed) is March (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in December
Glenham, NY
- Average humidity in December: 80%
The months with the highest relative humidity are February, October and December (80%).
The month with the lowest relative humidity is April (74%).
Average rainfall in December
Glenham, NY
- Average rainfall in December: 3.15"
The wettest months (with the highest rainfall) are October and December (3.15").
The driest month (with the least rainfall) is September (1.81").
Average rainfall days in December
Glenham, NY
- Average rainfall days in December: 10.8 days
The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is January (8 days).
Average snowfall in December
Glenham, NY
- Average snowfall in December: 3.54"
The month with the highest snowfall is January (4.29").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Glenham, NY
- Average snowfall days in December: 6.5 days
The month with the highest number of snowfall days is February (9.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Glenham, NY
- Average daylight in December: 9h and 1min
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 12min).
- Average sunshine in December: 4h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).
Average sunshine days in December
Glenham, NY
- Average sunshine days in December: 16.2 days
The month with the most sunshine days is January (17.8 days).
The month with the least sunshine days is May (12.4 days).
Average UV index in December
Glenham, NY
- 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
Glenham, NY
- Average cloud cover in December: 50
The month with the most cloud cover is February (Cloud cover 51).
The months with the least cloud cover are July and August (Cloud cover 37).
Average visibility in December
Glenham, NY
- 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).
Glenham, New York, USA
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