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
As November shifts into December, a minor alteration in temperatures is observed, with average highs reducing from a moderate 59.2°F (15.1°C) to a fresh 51.3°F (10.7°C). During December, the average low-temperature is an icy 37.8°F (3.2°C).Humidity
The months with the highest humidity are March and December, with an average relative humidity of 79%.Rainfall
In Killen, in December, it is raining for 12.2 days, with typically 2.76" (70mm) of accumulated precipitation. Throughout the year, there are 164.1 rainfall days, and 33.11" (841mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through March, November and December. In Killen, in December, during 1.1 snowfall days, 0.24" (6mm) of snow is typically accumulated. In Killen, during the entire year, snow falls for 6.4 days and aggregates up to 0.98" (25mm) 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 the month, sunrise is at 6:40 am and sunset at 4:38 pm. On the last day of December, sunrise is at 6:57 am and sunset at 4:49 pm CST.
Sunshine
The months with the least sunshine are February and December, with an average of 4.7h of sunshine.UV index
December is the month with the lowest UV index in Killen, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum daily UV index of 2 during December morphs into the following directions:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Killen in December?
What is the most humid month?
What is the average humidity in December?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
What time are sunrise and sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does Killen have in December?
What is the month with the lowest UV index?
What is the UV index reading in December in Killen?
Average temperature in December
Killen, AL
- Average high temperature in December: 51.3°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 (47.7°F).
- Average low temperature in December: 37.8°F
The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (33.3°F).
Average pressure in December
Killen, 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 (29.97"Hg).
Average wind speed in December
Killen, AL
- Average wind speed in December: 8mph
The windiest month (with the highest average wind speed) is February (8.4mph).
The calmest month (with the lowest average wind speed) is July (4.8mph).
Average humidity in December
Killen, AL
- Average humidity in December: 79%
The months with the highest relative humidity are March and December (79%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Killen, AL
- Average rainfall in December: 2.76"
The wettest month (with the highest rainfall) is February (3.58").
The driest month (with the least rainfall) is September (2.05").
Average rainfall days in December
Killen, AL
- Average rainfall days in December: 12.2 days
The month with the highest number of rainy days is July (18.6 days).
The month with the least rainy days is November (9.7 days).
Average snowfall in December
Killen, AL
- Average snowfall in December: 0.24"
The month with the highest snowfall is February (0.31").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Killen, AL
- Average snowfall days in December: 1.1 days
The month with the highest number of snowfall days is February (2.2 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
Killen, AL
- Average daylight in December: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in December: 4h and 4min
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 42min).
Average sunshine days in December
Killen, AL
- Average sunshine days in December: 16.7 days
The months with the most sunshine days are October and November (18.8 days).
The month with the least sunshine days is July (10.4 days).
Average UV index in December
Killen, AL
- Average UV index in December: 2
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in December
Killen, AL
- Average cloud cover in December: 50
The months with the most cloud cover are February and December (Cloud cover 50).
The month with the least cloud cover is June (Cloud cover 29).
Average visibility in December
Killen, 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).
Killen, Alabama, USA
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