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 decrease of average high-temperatures is mild in December, with a decline from a chilly 44.2°F (6.8°C) in November to a cold 34.3°F (1.3°C). The month of December shows a minor drop from daytime temperatures, generally recording a low average of 26.4°F (-3.1°C).Humidity
In Altmar, the average relative humidity in December is 83%.Rainfall
In Altmar, during December, the rain falls for 11 days and regularly aggregates up to 3.54" (90mm) of precipitation. In Altmar, during the entire year, the rain falls for 171 days and collects up to 39.21" (996mm) of precipitation.Snowfall
Months with snowfall in Altmar are January through May, October through December. In Altmar, in December, during 14.5 snowfall days, 8.54" (217mm) of snow is typically accumulated. In Altmar, during the entire year, snow falls for 76.2 days and aggregates up to 36.61" (930mm) of snow.Daylight
December has the shortest days of the year in Altmar, New York, with an average of 9h and 0min of daylight.On the first day of December, sunrise is at 7:17 am and sunset at 4:28 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 4:37 pm EST.
Sunshine
In December, the average sunshine is 2.8h.UV index
The months with the lowest UV index in Altmar, New York, are January and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The UV index of 1 during December translates into the following guidance:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Frequently asked questions
How cold is December in Altmar?
What is the average humidity in December in Altmar?
How much does it rain in Altmar in December?
How much does it snow in Altmar in December?
What is the month with the shortest days in Altmar?
What is the average length of the day in December in Altmar?
When are sunrise and sunset in December in Altmar?
How many hours of sunshine does Altmar have in December?
What is the month with the lowest UV index in Altmar?
How high is the UV index in December in Altmar?
Average temperature in December
Altmar, NY
- Average high temperature in December: 34.3°F
The warmest month (with the highest average high temperature) is July (75.2°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in December: 26.4°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (18°F).
Average pressure in December
Altmar, NY
- Average pressure in December: 30.05"Hg
The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Altmar, NY
- Average wind speed in December: 11.6mph
The windiest month (with the highest average wind speed) is January (11.9mph).
The calmest month (with the lowest average wind speed) is July (6.8mph).
Average humidity in December
Altmar, NY
- Average humidity in December: 83%
The months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is September (77%).
Average rainfall in December
Altmar, NY
- Average rainfall in December: 3.54"
The wettest month (with the highest rainfall) is October (4.02").
The driest month (with the least rainfall) is September (2.36").
Average rainfall days in December
Altmar, NY
- Average rainfall days in December: 11 days
The month with the highest number of rainy days is October (19.1 days).
The month with the least rainy days is February (7.8 days).
Average snowfall in December
Altmar, NY
- Average snowfall in December: 8.54"
The month with the highest snowfall is January (8.98").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Altmar, NY
- Average snowfall days in December: 14.5 days
The month with the highest number of snowfall days is January (18.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Altmar, NY
- Average daylight in December: 9h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in December: 2h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 2h and 24min).
Average sunshine days in December
Altmar, NY
- Average sunshine days in December: 8 days
The month with the most sunshine days is September (14 days).
The month with the least sunshine days is January (6.3 days).
Average UV index in December
Altmar, NY
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Altmar, NY
- Average cloud cover in December: 73
The month with the most cloud cover is January (Cloud cover 77).
The months with the least cloud cover are July and August (Cloud cover 30).
Average visibility in December
Altmar, NY
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).
Altmar, New York, USA
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