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 November transitions into December, Roundhill sees a gentle drop in the average high-temperature, transitioning from an enjoyable 66.2°F (19°C) to a moderate 58.8°F (14.9°C). Roundhill experiences an average low-temperature reading of 43°F (6.1°C) throughout December.Humidity
December is the most humid month in Roundhill, with an average relative humidity of 81%.Rainfall
In Roundhill, in December, during 13 rainfall days, 3.35" (85mm) of precipitation is typically accumulated. In Roundhill, during the entire year, the rain falls for 158.7 days and collects up to 33.23" (844mm) of precipitation.Snowfall
January through March, November and December are months with snowfall. The months with the most snowfall are January and December, with an average 0.35" (9mm) of accumulated snow.Daylight
The month with the shortest days is December, with an average of 10h and 6min of daylight.On the first day of December, sunrise is at 6:33 am and sunset at 4:46 pm. On the last day of the month, sunrise is at 6:50 am and sunset at 4:57 pm CST.
Sunshine
February and December, with an average of 4.8h of sunshine, are months with the least sunshine.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A daily high UV index of 3 in December leads to these guidelines:
Guard yourself - Avoiding sunburn is suggested. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Always opt for UVA and UVB-resistant sunglasses on radiant days. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in December?
What is the most humid month?
What is the average humidity in December?
How much does it rain in December?
What is the snowiest month?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Roundhill have in December?
When is the sunrise / sunset in December?
What are the months with the least sunshine?
How many hours of sunshine does Roundhill have in December?
When is the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Roundhill, AL
- Average high temperature in December: 58.8°F
The warmest months (with the highest average high temperature) are July and August (92.8°F).
The month with the lowest average high temperature is January (55.9°F).
- Average low temperature in December: 43°F
The month with the highest average low temperature is July (72.3°F).
The coldest month (with the lowest average low temperature) is January (38.7°F).
Average pressure in December
Roundhill, AL
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in December
Roundhill, AL
- Average wind speed in December: 6.2mph
The windiest month (with the highest average wind speed) is April (6.6mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).
Average humidity in December
Roundhill, AL
- Average humidity in December: 81%
The month with the highest relative humidity is December (81%).
The month with the lowest relative humidity is October (70%).
Average rainfall in December
Roundhill, AL
- Average rainfall in December: 3.35"
The wettest month (with the highest rainfall) is July (3.58").
The driest month (with the least rainfall) is November (1.85").
Average rainfall days in December
Roundhill, AL
- Average rainfall days in December: 13 days
The month with the highest number of rainy days is July (20.5 days).
The month with the least rainy days is November (7.5 days).
Average snowfall in December
Roundhill, AL
- Average snowfall in December: 0.35"
The months with the highest snowfall are January and December (0.35").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Roundhill, AL
- Average snowfall days in December: 0.4 days
The month with the highest number of snowfall days is January (0.8 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Roundhill, AL
- Average daylight in December: 10h and 1min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in December: 4h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).
Average sunshine days in December
Roundhill, AL
- Average sunshine days in December: 16.6 days
The month with the most sunshine days is October (22.3 days).
The month with the least sunshine days is July (9.1 days).
Average UV index in December
Roundhill, AL
- Average UV index in December: 3
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in December
Roundhill, AL
- Average cloud cover in December: 51
The month with the most cloud cover is December (Cloud cover 51).
The month with the least cloud cover is October (Cloud cover 33).
Average visibility in December
Roundhill, AL
- Average visibility in December: 5mi
The months with the highest visibility are April, June, October and November (6mi).
The months with the lowest visibility are January, February, March, May, July, August, September and December (5mi).
Roundhill, Alabama, USA
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