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
In Muttontown, the average high-temperature in December slightly decreases from a fresh 51.4°F (10.8°C) in November to a chilly 43.3°F (6.3°C). An average nighttime temperature of 35.8°F (2.1°C) marks December in Muttontown.Humidity
In December, the average relative humidity in Muttontown, New York, is 74%.Rainfall
In December, in Muttontown, the rain falls for 8.5 days. Throughout December, 0.83" (21mm) of precipitation is accumulated. In Muttontown, during the entire year, the rain falls for 103.6 days and collects up to 7.83" (199mm) of precipitation.Snowfall
January through March and December are months with snowfall in Muttontown. December is the first month it typically snows in Muttontown, New York. Throughout December, in the average 2.8 snowfall days, it receives 0.39" (10mm) of snow. Throughout the year, in Muttontown, New York, there are 14.8 snowfall days, and 1.34" (34mm) of snow is accumulated.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 6:59 am and sunset at 4:27 pm. On the last day of December, sunrise is at 7:18 am and sunset at 4:36 pm EST.
Sunshine
The average sunshine in December is 4.9h.UV index
January through March and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 2 during December translates into the following directions:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Frequently asked questions
Is December cold in Muttontown?
What is the average humidity in December in Muttontown?
How many days does it rain in December in Muttontown?
When does it start snowing in Muttontown?
What is the month with the shortest days in Muttontown?
What is the average length of the day in December in Muttontown?
What time are sunrise and sunset in December in Muttontown?
How many hours of sunshine does Muttontown have in December?
When is the lowest UV index in Muttontown?
How high is the UV index in December in Muttontown?
Average temperature in December
Muttontown, NY
- Average high temperature in December: 43.3°F
The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (37.4°F).
- Average low temperature in December: 35.8°F
The months with the highest average low temperature are July and August (71.2°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).
Average pressure in December
Muttontown, NY
- Average pressure in December: 30.07"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Muttontown, NY
- Average wind speed in December: 12.1mph
The windiest month (with the highest average wind speed) is January (12.5mph).
The calmest month (with the lowest average wind speed) is July (8.1mph).
Average humidity in December
Muttontown, NY
- Average humidity in December: 74%
The months with the highest relative humidity are May and June (76%).
The month with the lowest relative humidity is November (71%).
Average rainfall in December
Muttontown, NY
- Average rainfall in December: 0.83"
The wettest month (with the highest rainfall) is July (0.87").
The driest month (with the least rainfall) is September (0.35").
Average rainfall days in December
Muttontown, NY
- Average rainfall days in December: 8.5 days
The month with the highest number of rainy days is July (11.3 days).
The month with the least rainy days is January (5.4 days).
Average snowfall in December
Muttontown, NY
- Average snowfall in December: 0.39"
The month with the highest snowfall is March (0.43").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in December
Muttontown, NY
- Average snowfall days in December: 2.8 days
The month with the highest number of snowfall days is January (4.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Muttontown, NY
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 4h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in December
Muttontown, NY
- Average sunshine days in December: 19.5 days
The month with the most sunshine days is January (22.4 days).
The month with the least sunshine days is July (16.9 days).
Average UV index in December
Muttontown, NY
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March and December (UV index 2).
Average cloud cover in December
Muttontown, NY
- Average cloud cover in December: 48
The month with the most cloud cover is December (Cloud cover 48).
The months with the least cloud cover are July and August (Cloud cover 28).
Average visibility in December
Muttontown, NY
- 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).
Muttontown, New York, USA
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