December weather forecastShelby, AL
December
Weather in December
The first month of the winter, December, is still a cool month in Shelby, Alabama, with an average temperature ranging between min 40.3°F (4.6°C) and max 55.2°F (12.9°C).Temperature
As December begins, there is a minor decrease in the average high-temperature, softly falling from a refreshing 62.8°F (17.1°C) in November to a fresh 55.2°F (12.9°C). Shelby's average low-temperature in December is measured at an icy 40.3°F (4.6°C).Humidity
December is the most humid month, with an average relative humidity of 80%.Rainfall
In Shelby, in December, during 13.1 rainfall days, 3.74" (95mm) of precipitation is typically accumulated. In Shelby, during the entire year, the rain falls for 170.7 days and collects up to 39.06" (992mm) of precipitation.Snowfall
Months with snowfall are January through March, November and December. In Shelby, in December, snow falls for 0.5 days, with typically accumulated 0.47" (12mm) of snow. Throughout the year, there are 2.9 snowfall days, and 1.57" (40mm) of snow is accumulated.Daylight
With an average of 10h and 0min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 6:32 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 6:49 am and sunset at 4:49 pm CST.
Sunshine
February and December, with an average of 4.9h of sunshine, are months with the least sunshine.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 value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: The daily high UV index of 3 during December translates into the following recommendations:
Prioritize safety - Suggestions to prevent sun damage are offered. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Shelby, 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 (51.4°F).
- Average low temperature in December: 40.3°F
The months with the highest average low temperature are July and August (70.5°F).
The coldest month (with the lowest average low temperature) is January (36.1°F).
Average pressure in December
Shelby, AL
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The months with the lowest atmospheric pressure are June and August (29.98"Hg).
Average wind speed in December
Shelby, AL
- Average wind speed in December: 7.1mph
The windiest month (with the highest average wind speed) is February (7.4mph).
The calmest months (with the lowest average wind speed) are July and August (4.3mph).
Average humidity in December
Shelby, 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 (71%).
Average rainfall in December
Shelby, AL
- Average rainfall in December: 3.74"
The wettest month (with the highest rainfall) is April (4.06").
The driest month (with the least rainfall) is September (2.05").
Average rainfall days in December
Shelby, AL
- Average rainfall days in December: 13.1 days
The month with the highest number of rainy days is July (21.2 days).
The month with the least rainy days is November (7.9 days).
Average snowfall in December
Shelby, AL
- Average snowfall in December: 0.47"
The month with the highest snowfall is January (0.59").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Shelby, AL
- Average snowfall days in December: 0.5 days
The months with the highest number of snowfall days are January and 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
Shelby, 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 54min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The months with the least sunshine are February and December (Average sunshine: 4h and 54min).
Average sunshine days in December
Shelby, AL
- Average sunshine days in December: 16.2 days
The months with the most sunshine days are October and November (20.4 days).
The month with the least sunshine days is July (7.8 days).
Average UV index in December
Shelby, AL
- Average UV index in December: 3
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in December
Shelby, AL
- Average cloud cover in December: 46
The month with the most cloud cover is February (Cloud cover 47).
The months with the least cloud cover are September and October (Cloud cover 30).
Average visibility in December
Shelby, 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).
