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 reduction in the average high-temperature, down from November's chilly 45.5°F (7.5°C) to a cold 34.3°F (1.3°C). During the month of December, the temperature generally drops to a low average of 24.3°F (-4.3°C).Humidity
In December, the average relative humidity is 81%.Rainfall
In Rensselaer, in December, during 12.1 rainfall days, 2.72" (69mm) of precipitation is typically accumulated. Throughout the year, there are 162.8 rainfall days, and 31.02" (788mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In December, it is snowing for 8.6 days. Throughout December, 5.55" (141mm) of snow is accumulated. In Rensselaer, during the entire year, snow falls for 50.4 days and aggregates up to 27.2" (691mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 6min of daylight.On the first day of December, sunrise is at 7:06 am and sunset at 4:22 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 4:31 pm EST.
Sunshine
In Rensselaer, the average sunshine in December is 4.3h.UV index
January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for the average person.Note: A maximum daily UV index of 2 during December morphs into the following directions:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather U.S. | About Us
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 in Rensselaer?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Rensselaer have in December?
What time are sunrise and sunset in December?
How many hours of sunshine does Rensselaer have in December?
What are the months with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Rensselaer, NY
- Average high temperature in December: 34.3°F
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in December: 24.3°F
The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).
Average pressure in December
Rensselaer, NY
- Average pressure in December: 30.06"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Rensselaer, NY
- Average wind speed in December: 7.6mph
The windiest months (with the highest average wind speed) are January, February and March (8mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in December
Rensselaer, NY
- Average humidity in December: 81%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is April (73%).
Average rainfall in December
Rensselaer, NY
- Average rainfall in December: 2.72"
The wettest month (with the highest rainfall) is October (3.19").
The driest month (with the least rainfall) is September (1.93").
Average rainfall days in December
Rensselaer, NY
- Average rainfall days in December: 12.1 days
The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is January (9.1 days).
Average snowfall in December
Rensselaer, NY
- Average snowfall in December: 5.55"
The month with the highest snowfall is February (7.64").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Rensselaer, NY
- Average snowfall days in December: 8.6 days
The month with the highest number of snowfall days is January (14.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Rensselaer, NY
- 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 2min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).
Average sunshine days in December
Rensselaer, NY
- Average sunshine days in December: 14.1 days
The month with the most sunshine days is September (17.3 days).
The month with the least sunshine days is April (10.6 days).
Average UV index in December
Rensselaer, NY
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in December
Rensselaer, NY
- Average cloud cover in December: 54
The month with the most cloud cover is February (Cloud cover 58).
The months with the least cloud cover are July and August (Cloud cover 32).
Average visibility in December
Rensselaer, NY
- Average visibility in December: 6mi
The months with the highest visibility are April, May, June, July, October, November and December (6mi).
The months with the lowest visibility are January, February, March, August and September (5mi).
Rensselaer, New York, USA
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