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
With the onset of December, the average high-temperature subtly recedes from November's refreshing 59.5°F (15.3°C) to a cool 52°F (11.1°C). Nighttime temperatures consistently average an icy 38.3°F (3.5°C) during December.Humidity
December is the most humid month, with an average relative humidity of 80%.Rainfall
In December, the rain falls for 12.7 days. Throughout December, 4.21" (107mm) of precipitation is accumulated. In Johnsons Mill, during the entire year, the rain falls for 172.8 days and collects up to 41.26" (1048mm) of precipitation.Snowfall
Months with snowfall are January through March, November and December. In December, it is snowing for 1.1 days. Throughout December, 0.28" (7mm) of snow is accumulated. In Johnsons Mill, during the entire year, snow falls for 6.1 days and aggregates up to 1.93" (49mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 54min of daylight.On the first day of December, sunrise is at 6:34 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 6:51 am and sunset at 4:46 pm CST.
Sunshine
The average sunshine in December is 4.7h.UV index
January and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for average individuals.Note: The daily high UV index of 2 during December translates into the following recommendations:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
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?
How much does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When is the sunrise / sunset in December?
How long on average sun shines in December?
What is the month with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Johnsons Mill, AL
- Average high temperature in December: 52°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 (48.4°F).
- Average low temperature in December: 38.3°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (33.4°F).
Average pressure in December
Johnsons Mill, 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
Johnsons Mill, AL
- Average wind speed in December: 7.4mph
The windiest months (with the highest average wind speed) are January, February and March (7.8mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).
Average humidity in December
Johnsons Mill, 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
Johnsons Mill, AL
- Average rainfall in December: 4.21"
The wettest month (with the highest rainfall) is April (4.25").
The driest month (with the least rainfall) is September (2.32").
Average rainfall days in December
Johnsons Mill, AL
- Average rainfall days in December: 12.7 days
The month with the highest number of rainy days is July (19.7 days).
The month with the least rainy days is November (9.5 days).
Average snowfall in December
Johnsons Mill, AL
- Average snowfall in December: 0.28"
The month with the highest snowfall is January (0.83").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Johnsons Mill, AL
- Average snowfall days in December: 1.1 days
The month with the highest number of snowfall days is January (1.8 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
Johnsons Mill, AL
- Average daylight in December: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 24min).
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 18min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in December
Johnsons Mill, AL
- Average sunshine days in December: 16.3 days
The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is July (9.6 days).
Average UV index in December
Johnsons Mill, AL
- Average UV index in December: 2
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 and December (UV index 2).
Average cloud cover in December
Johnsons Mill, AL
- Average cloud cover in December: 49
The month with the most cloud cover is February (Cloud cover 51).
The months with the least cloud cover are June and September (Cloud cover 31).
Average visibility in December
Johnsons Mill, AL
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Johnsons Mill, Alabama, USA
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