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 move into December indicates a slight reduction in the average high-temperature, down from November's comfortable 61.7°F (16.5°C) to a cool 54.5°F (12.5°C). Mellow Valley sees an average low-temperature of 39.9°F (4.4°C) during December.Humidity
December is the most humid month, with an average relative humidity of 80%.Rainfall
In Mellow Valley, Alabama, in December, during 13.8 rainfall days, 3.9" (99mm) of precipitation is typically accumulated. In Mellow Valley, during the entire year, the rain falls for 184.4 days and collects up to 42.17" (1071mm) of precipitation.Snowfall
January through March and December are months with snowfall. December is the month with the most snowfall. Snow falls for 0.7 days and accumulates 0.67" (17mm) of snow.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 6:28 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 6:46 am and sunset at 4:46 pm CST.
Sunshine
The months with the least sunshine are February and December, with an average of 4.9h of 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 of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for average individuals.Note: A maximum UV index of 3 in December translates into the following recommendations:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Experience reduced UV exposure by about half when donning a wide-brim hat. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average December temperature?
What is the most humid month?
What is the average humidity in December?
How much does it rain in December?
When does it snow the most?
When does it start snowing?
What is the month with the shortest days?
How many hours of daylight does Mellow Valley have in December?
When are sunrise and sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does Mellow Valley have in December?
What are the months with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Mellow Valley, AL
- Average high temperature in December: 54.5°F
The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (50.7°F).
- Average low temperature in December: 39.9°F
The months with the highest average low temperature are July and August (69.4°F).
The coldest month (with the lowest average low temperature) is January (35.2°F).
Average pressure in December
Mellow Valley, 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
Mellow Valley, AL
- Average wind speed in December: 7.1mph
The windiest months (with the highest average wind speed) are January and February (7.5mph).
The calmest months (with the lowest average wind speed) are July and August (4.3mph).
Average humidity in December
Mellow Valley, 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 (73%).
Average rainfall in December
Mellow Valley, AL
- Average rainfall in December: 3.9"
The wettest month (with the highest rainfall) is August (4.37").
The driest month (with the least rainfall) is October (2.09").
Average rainfall days in December
Mellow Valley, AL
- Average rainfall days in December: 13.8 days
The month with the highest number of rainy days is July (24 days).
The month with the least rainy days is November (8.3 days).
Average snowfall in December
Mellow Valley, AL
- Average snowfall in December: 0.67"
The month with the highest snowfall is December (0.67").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in December
Mellow Valley, AL
- Average snowfall days in December: 0.7 days
The month with the highest number of snowfall days is January (1.4 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
Mellow Valley, 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 5min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The months with the least sunshine are February and December (Average sunshine: 4h and 54min).
Average sunshine days in December
Mellow Valley, AL
- Average sunshine days in December: 15.3 days
The months with the most sunshine days are October and November (19.7 days).
The month with the least sunshine days is July (5.6 days).
Average UV index in December
Mellow Valley, 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
Mellow Valley, AL
- Average cloud cover in December: 47
The months with the most cloud cover are February and December (Cloud cover 47).
The months with the least cloud cover are June, September and October (Cloud cover 31).
Average visibility in December
Mellow Valley, 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).
Mellow Valley, Alabama, USA
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