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
As December arrives, Centereach's weather displays a minor decrease in high-temperatures, transitioning from November's fresh 52.3°F (11.3°C) to a chilly 44.1°F (6.7°C). Centereach reports an average low temperature of 37.2°F (2.9°C) in December, a minor decrease from the day's highs.Humidity
In December, the average relative humidity is 74%.Rainfall
The month with the most rainfall in Centereach is December, when the rain falls for 12.3 days and typically aggregates up to 3.74" (95mm) of precipitation.Snowfall
Months with snowfall are January through March, May, October and December. December is the first month it typically snows in Centereach. Throughout December, in the average 2.4 snowfall days, it receives 1.22" (31mm) of snow. In Centereach, during the entire year, snow falls for 14.7 days and aggregates up to 6.14" (156mm) of snow.Daylight
The month with the shortest days in Centereach is December, with an average of 9h and 18min of daylight.On the first day of the month, sunrise is at 6:58 am and sunset at 4:25 pm. On the last day of December, in Centereach, sunrise is at 7:16 am and sunset at 4:34 pm EST.
Sunshine
In December, the average sunshine 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 in Centereach. A UV Index estimate of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: In December, the maximum UV index of 2 translates into these guidelines:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Frequently asked questions
Is December cold in Centereach?
What is the average humidity in December in Centereach?
What is the rainiest month in Centereach?
How much does it rain in Centereach in December?
When does it start to snow in Centereach?
What is the month with the shortest days in Centereach?
How many hours of daylight does Centereach have in December?
When is the sunrise / sunset in December in Centereach?
How long on average sun shines in December in Centereach?
What is the month with the lowest UV index in Centereach?
What is the UV index intensity in December in Centereach?
Average temperature in December
Centereach, NY
- Average high temperature in December: 44.1°F
The warmest month (with the highest average high temperature) is August (78.1°F).
The month with the lowest average high temperature is January (37.9°F).
- Average low temperature in December: 37.2°F
The month with the highest average low temperature is August (71.8°F).
The coldest month (with the lowest average low temperature) is January (30.2°F).
Average pressure in December
Centereach, 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
Centereach, NY
- Average wind speed in December: 13.4mph
The windiest month (with the highest average wind speed) is January (13.8mph).
The calmest months (with the lowest average wind speed) are July and August (9mph).
Average humidity in December
Centereach, NY
- Average humidity in December: 74%
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
Centereach, NY
- Average rainfall in December: 3.74"
The wettest month (with the highest rainfall) is December (3.74").
The driest month (with the least rainfall) is January (2.17").
Average rainfall days in December
Centereach, NY
- Average rainfall days in December: 12.3 days
The month with the highest number of rainy days is July (17.7 days).
The month with the least rainy days is January (8.3 days).
Average snowfall in December
Centereach, NY
- Average snowfall in December: 1.22"
The month with the highest snowfall is March (2.13").
The months with the least snowfall are April, June, July, August, September and November (0").
Average snowfall days in December
Centereach, NY
- Average snowfall days in December: 2.4 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 and September (0 days).
Average daylight in December /
Average sunshine in December
Centereach, 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 48min).
Average sunshine days in December
Centereach, NY
- Average sunshine days in December: 16.9 days
The month with the most sunshine days is November (18.8 days).
The month with the least sunshine days is July (11.3 days).
Average UV index in December
Centereach, 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
Centereach, NY
- Average cloud cover in December: 48
The month with the most cloud cover is December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in December
Centereach, 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).
Centereach, New York, USA
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