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
December is the month when Long Island experiences its coldest temperatures, averaging a high of 38.1°F (3.4°C) and a low of 34°F (1.1°C).Humidity
In Long Island, the average relative humidity in December is 83%.Rainfall
In Long Island, in December, it is raining for 17.5 days, with typically 9.02" (229mm) of accumulated precipitation. In Long Island, during the entire year, the rain falls for 219.6 days and collects up to 79.29" (2014mm) of precipitation.Snowfall
January through May, November and December are months with snowfall in Long Island. In December, in Long Island, Alaska, it is snowing for 9.5 days. Throughout December, 8.9" (226mm) of snow is accumulated. In Long Island, during the entire year, snow falls for 45.8 days and aggregates up to 47.48" (1206mm) of snow.Daylight
The month with the shortest days in Long Island is December, with an average of 7h and 18min of daylight.On the first day of the month, sunrise is at 7:52 am and sunset at 3:27 pm. On the last day of December, sunrise is at 8:14 am and sunset at 3:33 pm AKST.
Sunshine
In December, the average sunshine is 3.4h.UV index
January, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Long Island. A UV Index reading of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum high daily UV index of 1 during December translates into the following directions:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. When the Sun is at its strongest around midday, find shade and limit exposure. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Frequently asked questions
What month is the coldest in Long Island?
Is it cold in Long Island during December?
What is the average humidity in December in Long Island?
How many days does it rain in December in Long Island?
How much does it snow in Long Island in December?
What is the month with the shortest days in Long Island?
How many hours of daylight does Long Island have in December?
When are sunrise and sunset in December in Long Island?
How many hours of sunshine does Long Island have in December?
When is the lowest UV index in Long Island?
What is the UV index reading in December in Long Island?
Average temperature in December
Long Island, AK
- Average high temperature in December: 38.1°F
The warmest month (with the highest average high temperature) is August (59.7°F).
The month with the lowest average high temperature is December (38.1°F).
- Average low temperature in December: 34°F
The month with the highest average low temperature is August (54°F).
The coldest month (with the lowest average low temperature) is February (33.3°F).
Average pressure in December
Long Island, AK
- Average pressure in December: 29.87"Hg
The month with the highest atmospheric pressure is July (30.06"Hg).
The month with the lowest atmospheric pressure is November (29.79"Hg).
Average wind speed in December
Long Island, AK
- Average wind speed in December: 9.4mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest month (with the lowest average wind speed) is July (6.3mph).
Average humidity in December
Long Island, AK
- Average humidity in December: 83%
The month with the highest relative humidity is August (87%).
The month with the lowest relative humidity is March (80%).
Average rainfall in December
Long Island, AK
- Average rainfall in December: 9.02"
The wettest month (with the highest rainfall) is November (9.29").
The driest month (with the least rainfall) is May (2.91").
Average rainfall days in December
Long Island, AK
- Average rainfall days in December: 17.5 days
The month with the highest number of rainy days is October (21.4 days).
The month with the least rainy days is February (13.8 days).
Average snowfall in December
Long Island, AK
- Average snowfall in December: 8.9"
The month with the highest snowfall is March (10.94").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Long Island, AK
- Average snowfall days in December: 9.5 days
The month with the highest number of snowfall days is March (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Long Island, AK
- Average daylight in December: 7h and 2min
The month with the longest days is June (Average daylight: 17h and 18min).
The month with the shortest days is December (Average daylight: 7h and 18min).
- Average sunshine in December: 3h and 2min
The month with the most sunshine is May (Average sunshine: 7h and 18min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).
Average sunshine days in December
Long Island, AK
- Average sunshine days in December: 8.6 days
The month with the most sunshine days is May (13.6 days).
The month with the least sunshine days is November (5.8 days).
Average UV index in December
Long Island, AK
- Average UV index in December: 1
The months with the highest UV index are July and August (UV index 4).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in December
Long Island, AK
- Average cloud cover in December: 65
The month with the most cloud cover is January (Cloud cover 71).
The months with the least cloud cover are May and September (Cloud cover 54).
Average visibility in December
Long Island, AK
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Long Island, Alaska, USA
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