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 weather shows a temperature decrease, transitioning from a frosty 45.5°F (7.5°C) in November to a cold 34.7°F (1.5°C). During the nights in December, Altamont experiences a consistent average temperature of 24.4°F (-4.2°C).Humidity
In December, the average relative humidity is 81%.Rainfall
In Altamont, during December, the rain falls for 11.5 days and regularly aggregates up to 2.8" (71mm) of precipitation. In Altamont, during the entire year, the rain falls for 160.4 days and collects up to 32.44" (824mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In December, it is snowing for 8.6 days. Throughout December, 6.81" (173mm) of snow is accumulated. In Altamont, during the entire year, snow falls for 51.2 days and aggregates up to 32.09" (815mm) of snow.Daylight
With an average of 9h and 6min of daylight, December has the shortest days of the year.On the first day of December in Altamont, sunrise is at 7:07 am and sunset at 4:23 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 4:32 pm EST.
Sunshine
The average sunshine in December is 4.3h.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 unprotected exposure to Sun's UV rays for average individuals.Note: In December, the UV index of 1 transforms into the following advice:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Opt for tightly woven and loose clothing to enhance protection from the Sun. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Altamont in December?
What is the average humidity in December in Altamont?
How much does it rain in Altamont in December?
How much does it snow in Altamont in December?
What is the month with the shortest days in Altamont?
How many hours of daylight does Altamont have in December?
When is the sunrise / sunset in December in Altamont?
How many hours of sunshine does Altamont have in December?
What is the month with the lowest UV index in Altamont?
What is the UV index intensity in December in Altamont?
Average temperature in December
Altamont, NY
- Average high temperature in December: 34.7°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in December: 24.4°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
Altamont, 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
Altamont, NY
- Average wind speed in December: 7.6mph
The windiest months (with the highest average wind speed) are January and February (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in December
Altamont, 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 (74%).
Average rainfall in December
Altamont, NY
- Average rainfall in December: 2.8"
The wettest month (with the highest rainfall) is October (3.19").
The driest month (with the least rainfall) is September (2.05").
Average rainfall days in December
Altamont, NY
- Average rainfall days in December: 11.5 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is February (8.3 days).
Average snowfall in December
Altamont, NY
- Average snowfall in December: 6.81"
The month with the highest snowfall is January (8.15").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Altamont, NY
- Average snowfall days in December: 8.6 days
The month with the highest number of snowfall days is January (13.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Altamont, 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 24min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).
Average sunshine days in December
Altamont, NY
- Average sunshine days in December: 14.1 days
The month with the most sunshine days is September (16.7 days).
The months with the least sunshine days are February and April (11.3 days).
Average UV index in December
Altamont, NY
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Altamont, 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 33).
Average visibility in December
Altamont, NY
- Average visibility in December: 6mi
The months with the highest visibility are April, June, July, October, November and December (6mi).
The months with the lowest visibility are January, February, March, May, August and September (5mi).
Altamont, New York, USA
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