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
December brings a slight decrease in temperature, down from a moderate 57.7°F (14.3°C) in November to a cool 50.4°F (10.2°C). Flat Rock, during December nights, observes an average temperature of 36.5°F (2.5°C).Humidity
December is the most humid month in Flat Rock, with an average relative humidity of 81%.Rainfall
In Flat Rock, in December, during 14.3 rainfall days, 4.72" (120mm) of precipitation is typically accumulated. In Flat Rock, Alabama, during the entire year, the rain falls for 191.1 days and collects up to 48.94" (1243mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. In Flat Rock, in December, during 1.8 snowfall days, 0.43" (11mm) of snow is typically accumulated. Throughout the year, there are 9.7 snowfall days, and 2.6" (66mm) of snow is accumulated.Daylight
The month with the shortest days in Flat Rock, Alabama, is December, with an average of 9h and 54min of daylight.On the first day of the month, sunrise is at 6:32 am and sunset at 4:31 pm. On the last day of December, in Flat Rock, sunrise is at 6:50 am and sunset at 4:42 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 reading of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: In December, a daily maximum UV index of 2 leads to the following instructions:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. To cut down UV radiation exposure by about half, sport a wide-brim hat. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Frequently asked questions
What is the usual temperature for Flat Rock in December?
What is the most humid month in Flat Rock?
What is the average humidity in December in Flat Rock?
How much does it rain in Flat Rock in December?
How much does it snow in Flat Rock in December?
What is the month with the shortest days in Flat Rock?
How many hours of daylight does Flat Rock have in December?
When is the sunrise / sunset in December in Flat Rock?
How long on average sun shines in December in Flat Rock?
What are the months with the lowest UV index in Flat Rock?
How high is the UV index in December in Flat Rock?
Average temperature in December
Flat Rock, AL
- Average high temperature in December: 50.4°F
The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (46.8°F).
- Average low temperature in December: 36.5°F
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (31.8°F).
Average pressure in December
Flat Rock, 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
Flat Rock, AL
- Average wind speed in December: 6.8mph
The windiest month (with the highest average wind speed) is February (7.5mph).
The calmest months (with the lowest average wind speed) are July and August (4.3mph).
Average humidity in December
Flat Rock, AL
- Average humidity in December: 81%
The month with the highest relative humidity is December (81%).
The month with the lowest relative humidity is October (75%).
Average rainfall in December
Flat Rock, AL
- Average rainfall in December: 4.72"
The wettest month (with the highest rainfall) is July (5.24").
The driest month (with the least rainfall) is November (2.76").
Average rainfall days in December
Flat Rock, AL
- Average rainfall days in December: 14.3 days
The month with the highest number of rainy days is July (22.4 days).
The month with the least rainy days is November (10.3 days).
Average snowfall in December
Flat Rock, AL
- Average snowfall in December: 0.43"
The month with the highest snowfall is February (1.02").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Flat Rock, AL
- Average snowfall days in December: 1.8 days
The months with the highest number of snowfall days are January and February (2.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Flat Rock, 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 18min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in December
Flat Rock, AL
- Average sunshine days in December: 15.6 days
The month with the most sunshine days is October (18.3 days).
The month with the least sunshine days is July (7 days).
Average UV index in December
Flat Rock, 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
Flat Rock, AL
- Average cloud cover in December: 50
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 32).
Average visibility in December
Flat Rock, AL
- Average visibility in December: 5mi
The months with the highest visibility are April, June, October and November (6mi).
The months with the lowest visibility are January, February, March, May, July, August, September and December (5mi).
Flat Rock, Alabama, USA
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