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, Somerville's climate undergoes a slight change as the average high-temperature moves from a mild 59.7°F (15.4°C) in November to a fresh 51.8°F (11°C). Somerville's nighttime temperature during December is consistently averaged at a wintry 38.3°F (3.5°C).Humidity
December is the most humid month, with an average relative humidity of 79%.Rainfall
The wettest months are April and December, with an average 4.29" (109mm) of rainfall.Snowfall
Months with snowfall are January through March, November and December. In Somerville, in December, snow falls for 1.1 days, with typically accumulated 0.28" (7mm) of snow. In Somerville, during the entire year, snow falls for 6.1 days and aggregates up to 1.73" (44mm) of snow.Daylight
With an average of 9h and 54min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 6:36 am and sunset at 4:36 pm. On the last day of December, sunrise is at 6:53 am and sunset at 4:47 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 reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: A daily high UV index of 2 in December leads to these guidelines:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
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?
What is the wettest month?
How many days 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 Somerville have in December?
When are sunrise and sunset in December in Somerville?
How long on average sun shines in December?
What is the month with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Somerville, AL
- Average high temperature in December: 51.8°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 (47.8°F).
- Average low temperature in December: 38.3°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 (33.4°F).
Average pressure in December
Somerville, 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
Somerville, AL
- Average wind speed in December: 7.9mph
The windiest month (with the highest average wind speed) is February (8.4mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).
Average humidity in December
Somerville, 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
Somerville, AL
- Average rainfall in December: 4.29"
The wettest months (with the highest rainfall) are April and December (4.29").
The driest month (with the least rainfall) is November (2.24").
Average rainfall days in December
Somerville, AL
- Average rainfall days in December: 12.7 days
The month with the highest number of rainy days is July (18.4 days).
The month with the least rainy days is November (9.5 days).
Average snowfall in December
Somerville, AL
- Average snowfall in December: 0.28"
The month with the highest snowfall is February (0.59").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Somerville, AL
- Average snowfall days in December: 1.1 days
The months with the highest number of snowfall days are January and February (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
Somerville, 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 24min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in December
Somerville, AL
- Average sunshine days in December: 16.4 days
The month with the most sunshine days is October (19.6 days).
The month with the least sunshine days is July (10.5 days).
Average UV index in December
Somerville, 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
Somerville, AL
- Average cloud cover in December: 49
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is June (Cloud cover 30).
Average visibility in December
Somerville, 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).
Somerville, Alabama, USA
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