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 transition to December results in a modest reduction in average high-temperature, moving from a cool 52.3°F (11.3°C) in November to a chilly 43.9°F (6.6°C). In Middle Island, December nights experience a modest descent in temperature from daily peaks, cooling down to an average of 36.5°F (2.5°C).Humidity
In December, the average relative humidity in Middle Island is 73%.Rainfall
The month with the most rainfall in Middle Island, New York, is December, when the rain falls for 12.1 days and typically aggregates up to 3.82" (97mm) of precipitation.Snowfall
January through March, May and December are months with snowfall. December is the first month it typically snows in Middle Island, New York. Throughout December, in the average 2.3 snowfall days, it receives 1.14" (29mm) of snow. In Middle Island, during the entire year, snow falls for 14.9 days and aggregates up to 5.71" (145mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 18min of daylight.On the first day of December in Middle Island, sunrise is at 6:57 am and sunset at 4:24 pm. On the last day of the month, sunrise is at 7:16 am and sunset at 4:34 pm EST.
Sunshine
The average sunshine in December in Middle Island is 4.8h.UV index
January through March and December, with an average maximum UV index of 2, are months with the lowest UV index in Middle Island. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the average person.Note: The daily maximum UV index of 2 in December interprets into the following advice:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. Minimize direct exposure to the Sun during midday when its radiation is at its peak. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is December cold in Middle Island?
What is the average humidity in December in Middle Island?
What is the rainiest month in Middle Island?
How much does it rain in Middle Island in December?
When does it start snowing in Middle Island?
What is the month with the shortest days in Middle Island?
How many hours of daylight does Middle Island have in December?
When are sunrise and sunset in December in Middle Island?
How long on average sun shines in December in Middle Island?
When is the lowest UV index in Middle Island?
What is the UV index reading in December in Middle Island?
Average temperature in December
Middle Island, NY
- Average high temperature in December: 43.9°F
The warmest months (with the highest average high temperature) are July and August (78.3°F).
The month with the lowest average high temperature is January (37.9°F).
- Average low temperature in December: 36.5°F
The months with the highest average low temperature are July and August (70.9°F).
The coldest month (with the lowest average low temperature) is January (29.5°F).
Average pressure in December
Middle Island, 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 (29.93"Hg).
Average wind speed in December
Middle Island, NY
- Average wind speed in December: 13.2mph
The windiest month (with the highest average wind speed) is January (13.5mph).
The calmest month (with the lowest average wind speed) is July (8.7mph).
Average humidity in December
Middle Island, NY
- Average humidity in December: 73%
The months with the highest relative humidity are May and June (78%).
The month with the lowest relative humidity is November (71%).
Average rainfall in December
Middle Island, NY
- Average rainfall in December: 3.82"
The wettest month (with the highest rainfall) is December (3.82").
The driest month (with the least rainfall) is January (2.24").
Average rainfall days in December
Middle Island, NY
- Average rainfall days in December: 12.1 days
The month with the highest number of rainy days is July (16.5 days).
The month with the least rainy days is January (8 days).
Average snowfall in December
Middle Island, NY
- Average snowfall in December: 1.14"
The month with the highest snowfall is March (2.17").
The months with the least snowfall are April, June, July, August, September, October and November (0").
Average snowfall days in December
Middle Island, NY
- Average snowfall days in December: 2.3 days
The month with the highest number of snowfall days is February (4.6 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Middle Island, 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 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in December
Middle Island, NY
- Average sunshine days in December: 16.5 days
The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is August (12.5 days).
Average UV index in December
Middle Island, 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
Middle Island, NY
- Average cloud cover in December: 50
The month with the most cloud cover is December (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in December
Middle Island, 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).
Middle Island, New York, USA
Weather forecast for your location
2. Allow the app to use your location