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 Rockdale, the average high-temperature in December decreases from a chilly 43.2°F (6.2°C) in November to a wintry 32.9°F (0.5°C). In Rockdale, the December nights cool down to an average low of 23.2°F (-4.9°C).Humidity
In December, the average relative humidity is 87%.Rainfall
In Rockdale, in December, during 9.9 rainfall days, 1.38" (35mm) of precipitation is typically accumulated. Throughout the year, there are 142.2 rainfall days, and 18.58" (472mm) of precipitation is accumulated.Snowfall
Months with snowfall in Rockdale are January through May, October through December. In December, in Rockdale, it is snowing for 15.5 days. Throughout December, 4.25" (108mm) of snow is accumulated. In Rockdale, New York, during the entire year, snow falls for 82.5 days and aggregates up to 23.31" (592mm) of snow.Daylight
With an average of 9h and 6min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:11 am and sunset at 4:29 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 4:39 pm EST.
Sunshine
In Rockdale, the average sunshine in December is 2.7h.UV index
February, November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: An average maximum UV index of 1 in December leads to these recommendations:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Frequently asked questions
How cold is it in Rockdale in December?
What is the average humidity in December in Rockdale?
How much does it rain in Rockdale in December?
How much does it snow in Rockdale in December?
What is the month with the shortest days in Rockdale?
How many hours of daylight does Rockdale have in December?
When is the sunrise / sunset in December in Rockdale?
How long on average sun shines in December in Rockdale?
When is the lowest UV index in Rockdale?
How high is the UV index in December in Rockdale?
Average temperature in December
Rockdale, NY
- Average high temperature in December: 32.9°F
The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (26.8°F).
- Average low temperature in December: 23.2°F
The month with the highest average low temperature is July (57.2°F).
The coldest month (with the lowest average low temperature) is January (15.4°F).
Average pressure in December
Rockdale, NY
- Average pressure in December: 30.07"Hg
The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Rockdale, NY
- Average wind speed in December: 9.1mph
The windiest month (with the highest average wind speed) is January (9.4mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in December
Rockdale, NY
- Average humidity in December: 87%
The month with the highest relative humidity is February (88%).
The month with the lowest relative humidity is July (79%).
Average rainfall in December
Rockdale, NY
- Average rainfall in December: 1.38"
The wettest month (with the highest rainfall) is August (2.05").
The driest month (with the least rainfall) is September (1.1").
Average rainfall days in December
Rockdale, NY
- Average rainfall days in December: 9.9 days
The month with the highest number of rainy days is May (16.4 days).
The month with the least rainy days is January (6.3 days).
Average snowfall in December
Rockdale, NY
- Average snowfall in December: 4.25"
The month with the highest snowfall is January (4.65").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Rockdale, NY
- Average snowfall days in December: 15.5 days
The month with the highest number of snowfall days is January (18.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Rockdale, NY
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 2h and 4min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is February (Average sunshine: 2h and 30min).
Average sunshine days in December
Rockdale, NY
- Average sunshine days in December: 8.7 days
The month with the most sunshine days is September (16.3 days).
The month with the least sunshine days is February (7.1 days).
Average UV index in December
Rockdale, NY
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are February, November and December (UV index 1).
Average cloud cover in December
Rockdale, NY
- Average cloud cover in December: 73
The month with the most cloud cover is February (Cloud cover 75).
The month with the least cloud cover is July (Cloud cover 40).
Average visibility in December
Rockdale, NY
- Average visibility in December: 5mi
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (5mi).
The month with the lowest visibility is February (4mi).
Rockdale, New York, USA
Weather forecast for your location
2. Allow the app to use your location
