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 the transition to December, Riverdale observes a minor drop in the average high-temperature, shifting from a refreshing 61.7°F (16.5°C) in November to a cool 55.2°F (12.9°C). Riverdale's average low-temperature during December nights is observed to be a wintry 40.1°F (4.5°C).Humidity
With an average relative humidity of 77%, December is the most humid month.Rainfall
In Riverdale, in December, it is raining for 13 days, with typically 3.78" (96mm) of accumulated precipitation. Throughout the year, there are 181.2 rainfall days, and 41.06" (1043mm) of precipitation is accumulated.Snowfall
Months with snowfall in Riverdale are January through March, November and December. In December, it is snowing for 0.4 days. Throughout December, 0.12" (3mm) of snow is accumulated. Throughout the year, in Riverdale, there are 2.9 snowfall days, and 1.18" (30mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 10h and 0min of daylight.On the first day of December, sunrise is at 7:24 am and sunset at 5:29 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 5:40 pm EST.
Sunshine
The month with the least sunshine in Riverdale is December, with an average of 5h of sunshine.UV index
January, February and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum UV index of 3 during December leads to these instructions:
Heed the precautions - It is counselled to guard against solar damage. It's recommended to limit sun exposure when its radiation is at its peak during midday. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Frequently asked questions
What are the temperatures in Riverdale in December?
What is the most humid month in Riverdale?
What is the average humidity in December in Riverdale?
How many days does it rain in December in Riverdale?
How much does it snow in Riverdale in December?
What is the month with the shortest days in Riverdale?
What is the average length of the day in December in Riverdale?
When are sunrise and sunset in December in Riverdale?
What is the month with the least sunshine in Riverdale?
How many hours of sunshine does Riverdale have in December?
When is the lowest UV index in Riverdale?
How high is the UV index in December in Riverdale?
Average temperature in December
Riverdale, GA
- Average high temperature in December: 55.2°F
The warmest month (with the highest average high temperature) is July (90.3°F).
The month with the lowest average high temperature is January (51.3°F).
- Average low temperature in December: 40.1°F
The month with the highest average low temperature is July (71.1°F).
The coldest month (with the lowest average low temperature) is January (35.6°F).
Average pressure in December
Riverdale, GA
- Average pressure in December: 30.15"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).
Average wind speed in December
Riverdale, GA
- Average wind speed in December: 7.5mph
The windiest month (with the highest average wind speed) is January (8mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in December
Riverdale, GA
- Average humidity in December: 77%
The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Riverdale, GA
- Average rainfall in December: 3.78"
The wettest month (with the highest rainfall) is August (5.43").
The driest month (with the least rainfall) is October (2.17").
Average rainfall days in December
Riverdale, GA
- Average rainfall days in December: 13 days
The month with the highest number of rainy days is July (22.8 days).
The month with the least rainy days is November (9.6 days).
Average snowfall in December
Riverdale, GA
- Average snowfall in December: 0.12"
The month with the highest snowfall is January (0.47").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Riverdale, GA
- Average snowfall days in December: 0.4 days
The month with the highest number of snowfall days is February (1.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Riverdale, GA
- Average daylight in December: 10h and 0min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in December: 5h and 0min
The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days in December
Riverdale, GA
- Average sunshine days in December: 16.5 days
The month with the most sunshine days is October (20.1 days).
The month with the least sunshine days is July (7.2 days).
Average UV index in December
Riverdale, GA
- Average UV index in December: 3
The months with the highest UV index are May, June, July, August and September (UV index 6).
The months with the lowest UV index are January, February and December (UV index 3).
Average cloud cover in December
Riverdale, GA
- Average cloud cover in December: 47
The month with the most cloud cover is December (Cloud cover 47).
The months with the least cloud cover are June and October (Cloud cover 31).
Average visibility in December
Riverdale, GA
- 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).
Riverdale, Georgia, USA
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