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 ushers in a minute temperature change, with average high-temperatures reducing from November's moderate 58.6°F (14.8°C) to a fresh 50.9°F (10.5°C). Sylvania observes an average nighttime temperature of 36.7°F (2.6°C) during December.Humidity
December is the most humid month, with an average relative humidity of 81%.Rainfall
The wettest months are July and December, with an average 4.88" (124mm) of rainfall.Snowfall
Months with snowfall are January through March, November and December. In Sylvania, Alabama, in December, snow falls for 1.6 days, with typically accumulated 0.43" (11mm) of snow. In Sylvania, during the entire year, snow falls for 8.7 days and aggregates up to 2.52" (64mm) 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 6:32 am and sunset at 4:32 pm. On the last day of December, sunrise is at 6:49 am and sunset at 4:43 pm CST.
Sunshine
In December, the average sunshine is 4.5h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the average person.Note: A maximum daily UV index of 2 during December morphs into the following directions:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Stay sun-safe with clothing that is both closely woven and worn loosely. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in December?
What is the most humid month?
What is the average humidity in December?
What is the wettest month in Sylvania?
How many days does it rain in December in Sylvania?
How much 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?
How long on average sun shines in December in Sylvania?
What are the months with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Sylvania, AL
- Average high temperature in December: 50.9°F
The warmest month (with the highest average high temperature) is July (87.1°F).
The month with the lowest average high temperature is January (46.9°F).
- Average low temperature in December: 36.7°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (32.5°F).
Average pressure in December
Sylvania, 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
Sylvania, AL
- Average wind speed in December: 7.2mph
The windiest months (with the highest average wind speed) are February and March (7.8mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).
Average humidity in December
Sylvania, 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
Sylvania, AL
- Average rainfall in December: 4.88"
The wettest months (with the highest rainfall) are July and December (4.88").
The driest month (with the least rainfall) is October (2.8").
Average rainfall days in December
Sylvania, AL
- Average rainfall days in December: 14.6 days
The month with the highest number of rainy days is July (21.6 days).
The month with the least rainy days is November (10 days).
Average snowfall in December
Sylvania, AL
- Average snowfall in December: 0.43"
The month with the highest snowfall is February (0.98").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Sylvania, AL
- Average snowfall days in December: 1.6 days
The month with the highest number of snowfall days is February (2.7 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
Sylvania, 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 3min
The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).
Average sunshine days in December
Sylvania, AL
- Average sunshine days in December: 15.2 days
The month with the most sunshine days is October (19 days).
The month with the least sunshine days is July (7.9 days).
Average UV index in December
Sylvania, 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
Sylvania, AL
- Average cloud cover in December: 51
The month with the most cloud cover is February (Cloud cover 52).
The months with the least cloud cover are June and September (Cloud cover 33).
Average visibility in December
Sylvania, AL
- Average visibility in December: 5mi
The months with the highest visibility are March, April, June, September, October and November (6mi).
The months with the lowest visibility are January, February, May, July, August and December (5mi).
Sylvania, Alabama, USA
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