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's arrival signals a moderate reduction in the average high-temperature, easing from a refreshing 59.9°F (15.5°C) in November to a fresh 52.5°F (11.4°C). During the month of December, Hartselle experiences a steady low-temperature average of 38.3°F (3.5°C).Humidity
December is the most humid month, with an average relative humidity of 79%.Rainfall
December is the month with the most rainfall. Rain falls for 13.5 days and accumulates 4.25" (108mm) of precipitation.Snowfall
January through March, November and December are months with snowfall. In Hartselle, during December, snow falls for 1.4 days and regularly aggregates up to 0.31" (8mm) of snow. In Hartselle, Alabama, during the entire year, snow falls for 6.8 days and aggregates up to 1.97" (50mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 54min of daylight.On the first day of the month, sunrise is at 6:36 am and sunset at 4:37 pm. On the last day of December, in Hartselle, sunrise is at 6:54 am and sunset at 4:48 pm CST.
Sunshine
In December, the average sunshine 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 estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: In December, the maximum UV index of 2 suggests this advice:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. To cut down UV radiation exposure by about half, sport a wide-brim hat. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Frequently asked questions
What are December temperatures?
What is the most humid month?
What is the average humidity in December?
What is the rainiest month?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Hartselle have in December?
What time are sunrise and sunset in December?
How many hours of sunshine does Hartselle have in December?
What are the months with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Hartselle, AL
- Average high temperature in December: 52.5°F
The warmest month (with the highest average high temperature) is July (89.1°F).
The month with the lowest average high temperature is January (48.7°F).
- Average low temperature in December: 38.3°F
The month with the highest average low temperature is July (69.6°F).
The coldest month (with the lowest average low temperature) is January (33.6°F).
Average pressure in December
Hartselle, 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
Hartselle, AL
- Average wind speed in December: 7.8mph
The windiest month (with the highest average wind speed) is February (8.3mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).
Average humidity in December
Hartselle, AL
- Average humidity in December: 79%
The month with the highest relative humidity is December (79%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Hartselle, AL
- Average rainfall in December: 4.25"
The wettest month (with the highest rainfall) is December (4.25").
The driest month (with the least rainfall) is November (2.24").
Average rainfall days in December
Hartselle, AL
- Average rainfall days in December: 13.5 days
The month with the highest number of rainy days is July (19.5 days).
The month with the least rainy days is November (9.7 days).
Average snowfall in December
Hartselle, AL
- Average snowfall in December: 0.31"
The month with the highest snowfall is January (0.79").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Hartselle, AL
- Average snowfall days in December: 1.4 days
The month with the highest number of snowfall days is February (2.1 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
Hartselle, 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 month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in December
Hartselle, AL
- Average sunshine days in December: 15.4 days
The month with the most sunshine days is October (19.4 days).
The month with the least sunshine days is July (9.3 days).
Average UV index in December
Hartselle, 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
Hartselle, AL
- Average cloud cover in December: 49
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is June (Cloud cover 30).
Average visibility in December
Hartselle, 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).
Hartselle, Alabama, USA
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