December weather forecastSylacauga, AL
December
Weather in December
December, the first month of the winter in Sylacauga, is still a cool month, with an average temperature fluctuating between 55.2°F (12.9°C) and 40.5°F (4.7°C).Temperature
A minor decrease in the average high-temperature is observed during December, shifting from a comfortable 62.4°F (16.9°C) in November to a fresh 55.2°F (12.9°C). December brings Sylacauga a consistent average low-temperature of 40.5°F (4.7°C).Humidity
The most humid month is December, with an average relative humidity of 80%.Rainfall
In Sylacauga, in December, during 9.4 rainfall days, 1.02" (26mm) of precipitation is typically accumulated. In Sylacauga, during the entire year, the rain falls for 126.6 days and collects up to 12.64" (321mm) of precipitation.Snowfall
Months with snowfall are January, February, November and December. The months with the most snowfall are January and December, with an average 0.12" (3mm) of accumulated snow.Daylight
The month with the shortest days is December, with an average of 10h and 0min of daylight.On the first day of December, sunrise is at 6:30 am and sunset at 4:37 pm. On the last day of the month, sunrise is at 6:48 am and sunset at 4:48 pm CST.
Sunshine
In December, the average sunshine is 5h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: In December, the maximum UV index of 3 transforms into these recommendations:
Prioritize safety - Suggestions to prevent sun damage are offered. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. During bright days, sunglasses that offer UVA and UVB defense are recommended. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Sylacauga, AL
- Average high temperature in December: 55.2°F
The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (51.6°F).
- Average low temperature in December: 40.5°F
The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is January (35.8°F).
Average pressure in December
Sylacauga, 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 (29.98"Hg).
Average wind speed in December
Sylacauga, AL
- Average wind speed in December: 7.1mph
The windiest month (with the highest average wind speed) is February (7.5mph).
The calmest months (with the lowest average wind speed) are July and August (4.3mph).
Average humidity in December
Sylacauga, AL
- Average humidity in December: 80%
The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Sylacauga, AL
- Average rainfall in December: 1.02"
The wettest month (with the highest rainfall) is August (1.57").
The driest month (with the least rainfall) is September (0.59").
Average rainfall days in December
Sylacauga, AL
- Average rainfall days in December: 9.4 days
The month with the highest number of rainy days is July (17.1 days).
The month with the least rainy days is November (5.5 days).
Average snowfall in December
Sylacauga, AL
- Average snowfall in December: 0.12"
The months with the highest snowfall are January and December (0.12").
The months with the least snowfall are March, April, May, June, July, August, September and October (0").
Average snowfall days in December
Sylacauga, AL
- Average snowfall days in December: 0.5 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
Sylacauga, AL
- 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 36min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).
Average sunshine days in December
Sylacauga, AL
- Average sunshine days in December: 19.8 days
The month with the most sunshine days is November (23.3 days).
The month with the least sunshine days is July (10.9 days).
Average UV index in December
Sylacauga, AL
- Average UV index in December: 3
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in December
Sylacauga, AL
- Average cloud cover in December: 46
The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is October (Cloud cover 30).
Average visibility in December
Sylacauga, AL
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
