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 arrival, Putnam Valley sees a decrease in average high-temperatures, moving from a frosty 49.5°F (9.7°C) in November to a cold 39.9°F (4.4°C). Putnam Valley records an average low-temperature of 28.8°F (-1.8°C) throughout the month of December.Humidity
February, October and December, with an average relative humidity of 79%, are the most humid months.Rainfall
In Putnam Valley, in December, it is raining for 9.5 days, with typically 3.11" (79mm) of accumulated precipitation. Throughout the year, there are 148.4 rainfall days, and 30.55" (776mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In December, it is snowing for 4.7 days. Throughout December, 2.32" (59mm) of snow is accumulated. Throughout the year, there are 24.4 snowfall days, and 12.87" (327mm) 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 the month, sunrise is at 7:02 am and sunset at 4:26 pm. On the last day of December, sunrise is at 7:21 am and sunset at 4:36 pm EST.
Sunshine
The average sunshine in December is 4.9h.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for average individuals.Note: The maximum daily UV index of 2 in December interprets into the following recommendations:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is December cold?
What is the most humid month?
What is the average humidity in December?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days in Putnam Valley?
How many hours of daylight does Putnam Valley have in December?
When are sunrise and sunset in December?
How long on average sun shines in December?
When is the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Putnam Valley, NY
- Average high temperature in December: 39.9°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (33.8°F).
- Average low temperature in December: 28.8°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (21.9°F).
Average pressure in December
Putnam Valley, NY
- Average pressure in December: 30.07"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
Putnam Valley, NY
- Average wind speed in December: 6.8mph
The windiest months (with the highest average wind speed) are January and March (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in December
Putnam Valley, NY
- Average humidity in December: 79%
The months with the highest relative humidity are February, October and December (79%).
The month with the lowest relative humidity is April (73%).
Average rainfall in December
Putnam Valley, NY
- Average rainfall in December: 3.11"
The wettest month (with the highest rainfall) is July (3.31").
The driest month (with the least rainfall) is February (1.81").
Average rainfall days in December
Putnam Valley, NY
- Average rainfall days in December: 9.5 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (6.5 days).
Average snowfall in December
Putnam Valley, NY
- Average snowfall in December: 2.32"
The month with the highest snowfall is March (3.39").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Putnam Valley, NY
- Average snowfall days in December: 4.7 days
The month with the highest number of snowfall days is February (6.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Putnam Valley, NY
- Average daylight in December: 9h and 2min
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 5min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in December
Putnam Valley, NY
- Average sunshine days in December: 17.5 days
The month with the most sunshine days is January (20.3 days).
The month with the least sunshine days is July (11.4 days).
Average UV index in December
Putnam Valley, NY
- Average UV index in December: 2
The months with the highest UV index are June and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
Putnam Valley, NY
- Average cloud cover in December: 48
The months with the most cloud cover are February, March and December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in December
Putnam Valley, NY
- Average visibility in December: 6mi
The months with the highest visibility are January, March, April, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are February and May (5mi).
Putnam Valley, New York, USA
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