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 arrival of December is marked by a minor reduction in average high-temperature, sliding from a moderate 59.2°F (15.1°C) in November to a cool 51.1°F (10.6°C). Throughout December, the average low-temperature records at a cold 37.8°F (3.2°C).Humidity
March and December, with an average relative humidity of 79%, are the most humid months.Rainfall
In December, in Sullivan Crossroads, the rain falls for 13.2 days. Throughout December, 3.7" (94mm) of precipitation is accumulated. Throughout the year, there are 178.6 rainfall days, and 41.26" (1048mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through March, November and December. In Sullivan Crossroads, in December, during 1.1 snowfall days, 0.28" (7mm) of snow is typically accumulated. In Sullivan Crossroads, during the entire year, snow falls for 7.3 days and aggregates up to 1.69" (43mm) of snow.Daylight
With an average of 9h and 54min of daylight, December has the shortest days of the year in Sullivan Crossroads.On the first day of December, sunrise is at 6:41 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 4:50 pm CST.
Sunshine
The months with the least sunshine are February and December, with an average of 4.7h of sunshine.UV index
The month with the lowest UV index is December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum daily UV index of 2 during December morphs into the following directions:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Published by: Weather Atlas | 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?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Sullivan Crossroads have in December?
What time are sunrise and sunset in December?
What are the months with the least sunshine?
How many hours of sunshine does Sullivan Crossroads have in December?
When is the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Sullivan Crossroads, AL
- Average high temperature in December: 51.1°F
The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is January (47.7°F).
- Average low temperature in December: 37.8°F
The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (33.1°F).
Average pressure in December
Sullivan Crossroads, AL
- Average pressure in December: 30.15"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in December
Sullivan Crossroads, AL
- Average wind speed in December: 7.8mph
The windiest month (with the highest average wind speed) is February (8.3mph).
The calmest month (with the lowest average wind speed) is July (4.8mph).
Average humidity in December
Sullivan Crossroads, AL
- Average humidity in December: 79%
The months with the highest relative humidity are March and December (79%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Sullivan Crossroads, AL
- Average rainfall in December: 3.7"
The wettest month (with the highest rainfall) is February (4.53").
The driest month (with the least rainfall) is November (2.56").
Average rainfall days in December
Sullivan Crossroads, AL
- Average rainfall days in December: 13.2 days
The month with the highest number of rainy days is July (19.8 days).
The month with the least rainy days is November (10.5 days).
Average snowfall in December
Sullivan Crossroads, AL
- Average snowfall in December: 0.28"
The month with the highest snowfall is February (0.71").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Sullivan Crossroads, AL
- Average snowfall days in December: 1.1 days
The month with the highest number of snowfall days is February (2.4 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
Sullivan Crossroads, AL
- Average daylight in December: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in December: 4h and 4min
The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The months with the least sunshine are February and December (Average sunshine: 4h and 42min).
Average sunshine days in December
Sullivan Crossroads, AL
- Average sunshine days in December: 15.6 days
The months with the most sunshine days are October and November (17.6 days).
The month with the least sunshine days is July (9.9 days).
Average UV index in December
Sullivan Crossroads, AL
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in December
Sullivan Crossroads, AL
- Average cloud cover in December: 50
The months with the most cloud cover are February and December (Cloud cover 50).
The month with the least cloud cover is June (Cloud cover 29).
Average visibility in December
Sullivan Crossroads, AL
- 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).
Sullivan Crossroads, Alabama, USA
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