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 December, the average high-temperature marginally drops from a moderate 59.2°F (15.1°C) in November to a cool 51.1°F (10.6°C). During December, the average low-temperature is recorded 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 Sullivan Crossroads, in December, it is raining for 13.2 days, with typically 3.7" (94mm) of accumulated precipitation. In Sullivan Crossroads, during the entire year, the rain falls for 178.6 days and collects up to 41.26" (1048mm) of precipitation.Snowfall
January through March, November and December are months with snowfall in Sullivan Crossroads. In December, it is snowing for 1.1 days. Throughout December, 0.28" (7mm) of snow is 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.On the first day of the month, sunrise is at 6:41 am and sunset at 4:39 pm. On the last day of December, sunrise is at 6:58 am and sunset at 4:50 pm CST.
Sunshine
February and December, with an average of 4.7h of sunshine, are months with the least sunshine.UV index
With an average maximum UV index of 2, December is the month with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.Note: A daily maximum UV index of 2 in December translates into the following instructions:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average December temperature?
What are the most humid months?
What is the average humidity in December in Sullivan Crossroads?
How many days does it rain in December?
How much does it snow in December?
What is the month with the shortest days in Sullivan Crossroads?
What is the average length of the day in December?
When is the sunrise / sunset in December in Sullivan Crossroads?
What is the month with the least sunshine?
How long on average sun shines in December in Sullivan Crossroads?
When is the lowest UV index?
How high is the UV index 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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