December weather forecastTrussville, AL
December
Weather in December
Closing the year with December, Trussville returns to its winter visage. With temperatures ranging from 39.4°F (4.1°C) to 54.1°F (12.3°C), the winter chill dominates the city atmosphere. It is the month with the highest relative humidity, reaching 80%, which enhances the perceptible cold. The shorter daylight hours and abundant cloud coverage cement December's position as a winter month. As the year rounds up in Trussville, the weather provides an ideal backdrop for holiday festivities and celebrations.Temperature
The arrival of December suggests a slight decrease in the average high-temperature, moving from a comfortable 61.2°F (16.2°C) in November to a fresh 54.1°F (12.3°C). Throughout December, the average low-temperature records at a cold 39.4°F (4.1°C).Humidity
The most humid month is December, with an average relative humidity of 80%.Rainfall
In Trussville, during December, the rain falls for 10.9 days and regularly aggregates up to 1.85" (47mm) of precipitation. Throughout the year, there are 149 rainfall days, and 19.88" (505mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through March, November and December. In Trussville, in December, during 0.6 snowfall days, 0.08" (2mm) of snow is typically accumulated. In Trussville, during the entire year, snow falls for 3 days and aggregates up to 0.43" (11mm) of snow.Daylight
The month with the shortest days is December, with an average of 10h and 0min of daylight.On the first day of the month, sunrise is at 6:33 am and sunset at 4:38 pm. On the last day of December, sunrise is at 6:50 am and sunset at 4:48 pm CST.
Sunshine
February and December, with an average of 4.8h of sunshine, are months with the least sunshine.UV index
December is the month with the lowest UV index, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: In December, the average maximum UV index of 2 translates into the following recommendations:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Trussville, AL
- Average high temperature in December: 54.1°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 (50.7°F).
- Average low temperature in December: 39.4°F
The month with the highest average low temperature is July (70.3°F).
The coldest month (with the lowest average low temperature) is January (34.9°F).
Average pressure in December
Trussville, 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 (29.98"Hg).
Average wind speed in December
Trussville, AL
- Average wind speed in December: 7mph
The windiest months (with the highest average wind speed) are January and February (7.4mph).
The calmest months (with the lowest average wind speed) are July and August (4.3mph).
Average humidity in December
Trussville, 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
Trussville, AL
- Average rainfall in December: 1.85"
The wettest month (with the highest rainfall) is August (2.24").
The driest month (with the least rainfall) is October (1.06").
Average rainfall days in December
Trussville, AL
- Average rainfall days in December: 10.9 days
The month with the highest number of rainy days is July (18.6 days).
The month with the least rainy days is November (7.9 days).
Average snowfall in December
Trussville, AL
- Average snowfall in December: 0.08"
The month with the highest snowfall is January (0.2").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Trussville, AL
- Average snowfall days in December: 0.6 days
The month with the highest number of snowfall days is February (1 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
Trussville, 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: 4h and 48min
The months with the most sunshine are June and July (Average sunshine: 10h and 36min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).
Average sunshine days in December
Trussville, AL
- Average sunshine days in December: 17.6 days
The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is July (9.6 days).
Average UV index in December
Trussville, 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
Trussville, AL
- Average cloud cover in December: 47
The month with the most cloud cover is February (Cloud cover 48).
The months with the least cloud cover are June and September (Cloud cover 30).
Average visibility in December
Trussville, 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).
