December weather forecastAltona, NY
December
Weather in December
December, the first month of the winter in Altona, is still a freezing cold month, with an average temperature fluctuating between 29.3°F (-1.5°C) and 19.6°F (-6.9°C).Temperature
December's arrival corresponds with a decrease in average high-temperatures, from November's wintry 41.7°F (5.4°C) to a freezing cold 29.3°F (-1.5°C). In December, Altona records an average nighttime temperature of 19.6°F (-6.9°C).Humidity
In December, the average relative humidity is 86%.Rainfall
In Altona, in December, it is raining for 7.9 days, with typically 1.97" (50mm) of accumulated precipitation. In Altona, during the entire year, the rain falls for 146.4 days and collects up to 27.36" (695mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Altona, during December, snow falls for 15.2 days and regularly aggregates up to 5.98" (152mm) of snow. In Altona, during the entire year, snow falls for 76.4 days and aggregates up to 37.52" (953mm) of snow.Daylight
December has the shortest days of the year, with an average of 8h and 54min of daylight.On the first day of December in Altona, sunrise is at 7:12 am and sunset at 4:14 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 4:23 pm EST.
Sunshine
In December, the average sunshine is 3.2h.UV index
The months with the lowest UV index are January, February and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: The UV index of 1 during December translates into the following guidance:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. It's recommended to limit sun exposure when its radiation is at its peak during midday. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Altona, NY
- Average high temperature in December: 29.3°F
The warmest month (with the highest average high temperature) is July (77.4°F).
The month with the lowest average high temperature is January (23.5°F).
- Average low temperature in December: 19.6°F
The month with the highest average low temperature is July (59.7°F).
The coldest month (with the lowest average low temperature) is January (10.6°F).
Average pressure in December
Altona, NY
- Average pressure in December: 30.04"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in December
Altona, NY
- Average wind speed in December: 7.9mph
The windiest month (with the highest average wind speed) is April (8.9mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).
Average humidity in December
Altona, NY
- Average humidity in December: 86%
The months with the highest relative humidity are January and February (89%).
The months with the lowest relative humidity are April and May (76%).
Average rainfall in December
Altona, NY
- Average rainfall in December: 1.97"
The wettest month (with the highest rainfall) is June (3.19").
The driest month (with the least rainfall) is January (1.54").
Average rainfall days in December
Altona, NY
- Average rainfall days in December: 7.9 days
The month with the highest number of rainy days is July (18.5 days).
The month with the least rainy days is February (3.9 days).
Average snowfall in December
Altona, NY
- Average snowfall in December: 5.98"
The month with the highest snowfall is February (8.43").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Altona, NY
- Average snowfall days in December: 15.2 days
The month with the highest number of snowfall days is February (17.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Altona, NY
- Average daylight in December: 8h and 54min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in December: 3h and 12min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 2h and 48min).
Average sunshine days in December
Altona, NY
- Average sunshine days in December: 11.3 days
The month with the most sunshine days is November (16 days).
The month with the least sunshine days is June (9.1 days).
Average UV index in December
Altona, NY
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover in December
Altona, NY
- Average cloud cover in December: 66
The month with the most cloud cover is February (Cloud cover 71).
The months with the least cloud cover are July and August (Cloud cover 33).
Average visibility in December
Altona, NY
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The month with the lowest visibility is January (4mi).
