December weather forecastHarrisburg, AL
December
Weather in December
December, the first month of the winter in Harrisburg, is also a fresh month, with an average temperature fluctuating between 54.5°F (12.5°C) and 39.4°F (4.1°C).Temperature
December heralds a minor drop in average high-temperature, sliding from November's enjoyable 61.7°F (16.5°C) to a fresh 54.5°F (12.5°C). Throughout December, an average low-temperature of 39.4°F (4.1°C) is experienced.Humidity
December is the most humid month, with an average relative humidity of 80%.Rainfall
In December, the rain falls for 14.1 days. Throughout December, 4.02" (102mm) of precipitation is accumulated. Throughout the year, there are 184.1 rainfall days, and 41.97" (1066mm) of precipitation is accumulated.Snowfall
Months with snowfall are January, February and December. December is the first month it typically snows. Throughout December, in the average 0.7 snowfall days, it receives 0.55" (14mm) of snow. Throughout the year, there are 4.1 snowfall days, and 2.05" (52mm) of snow is accumulated.Daylight
With an average of 10h and 0min of daylight, December has the shortest days of the year in Harrisburg.On the first day of the month, sunrise is at 6:31 am and sunset at 4:36 pm. On the last day of December, sunrise is at 6:49 am and sunset at 4:47 pm CST.
Sunshine
In December, the average sunshine is 4.9h.UV index
With an average maximum UV index of 2, December is the month with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The daily high UV index of 2 in December translates into this advice:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Harrisburg, AL
- Average high temperature in December: 54.5°F
The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (50.9°F).
- Average low temperature in December: 39.4°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 (35.1°F).
Average pressure in December
Harrisburg, 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
Harrisburg, AL
- Average wind speed in December: 6.9mph
The windiest months (with the highest average wind speed) are January and February (7.3mph).
The calmest months (with the lowest average wind speed) are July and August (4.2mph).
Average humidity in December
Harrisburg, 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 (72%).
Average rainfall in December
Harrisburg, AL
- Average rainfall in December: 4.02"
The wettest month (with the highest rainfall) is August (4.06").
The driest month (with the least rainfall) is October (2.32").
Average rainfall days in December
Harrisburg, AL
- Average rainfall days in December: 14.1 days
The month with the highest number of rainy days is July (22.4 days).
The month with the least rainy days is November (9.2 days).
Average snowfall in December
Harrisburg, AL
- Average snowfall in December: 0.55"
The month with the highest snowfall is January (0.91").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").
Average snowfall days in December
Harrisburg, AL
- Average snowfall days in December: 0.7 days
The month with the highest number of snowfall days is February (1.6 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
Harrisburg, 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 54min
The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in December
Harrisburg, AL
- Average sunshine days in December: 14.8 days
The month with the most sunshine days is October (19 days).
The month with the least sunshine days is July (6.2 days).
Average UV index in December
Harrisburg, AL
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in December
Harrisburg, AL
- Average cloud cover in December: 47
The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is September (Cloud cover 30).
Average visibility in December
Harrisburg, 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).
