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
As December commences in Decatur, the average high-temperature subtly reduces, transitioning from a refreshing 59.5°F (15.3°C) in November to a fresh 51.6°F (10.9°C). Decatur records an average temperature drop to a cold 38.3°F (3.5°C) in December.Humidity
The most humid month is December, with an average relative humidity of 79%.Rainfall
December is the month with the most rainfall in Decatur, Alabama. Rain falls for 13.3 days and accumulates 4.45" (113mm) of precipitation.Snowfall
January through March, November and December are months with snowfall in Decatur. In December, it is snowing for 1.5 days. Throughout December, 0.35" (9mm) of snow is accumulated. In Decatur, during the entire year, snow falls for 7.4 days and aggregates up to 1.77" (45mm) 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 December in Decatur, sunrise is at 6:37 am and sunset at 4:37 pm. On the last day of the month, sunrise is at 6:54 am and sunset at 4:47 pm CST.
Sunshine
In Decatur, the average sunshine in December is 4.8h.UV index
January and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: In December, the maximum UV index of 2 translates into these guidelines:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Frequently asked questions
What are the temperatures in Decatur in December?
What is the most humid month in Decatur?
What is the average humidity in December in Decatur?
What is the wettest month in Decatur?
How much does it rain in Decatur in December?
How many days does it snow in December in Decatur?
What is the month with the shortest days in Decatur?
What is the average length of the day in December in Decatur?
When are sunrise and sunset in December in Decatur?
How long on average sun shines in December in Decatur?
What is the month with the lowest UV index in Decatur?
How high is the UV index in December in Decatur?
Average temperature in December
Decatur, AL
- Average high temperature in December: 51.6°F
The warmest month (with the highest average high temperature) is July (88.5°F).
The month with the lowest average high temperature is January (47.5°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 (33.3°F).
Average pressure in December
Decatur, 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
Decatur, AL
- Average wind speed in December: 8.1mph
The windiest month (with the highest average wind speed) is February (8.6mph).
The calmest month (with the lowest average wind speed) is July (4.8mph).
Average humidity in December
Decatur, 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
Decatur, AL
- Average rainfall in December: 4.45"
The wettest month (with the highest rainfall) is December (4.45").
The driest months (with the least rainfall) are September and November (2.48").
Average rainfall days in December
Decatur, AL
- Average rainfall days in December: 13.3 days
The month with the highest number of rainy days is July (20 days).
The month with the least rainy days is November (10.4 days).
Average snowfall in December
Decatur, AL
- Average snowfall in December: 0.35"
The months with the highest snowfall are January and February (0.55").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Decatur, AL
- Average snowfall days in December: 1.5 days
The month with the highest number of snowfall days is February (2.5 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
Decatur, 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 5min
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
Decatur, AL
- Average sunshine days in December: 15.5 days
The month with the most sunshine days is October (19.2 days).
The month with the least sunshine days is July (8.8 days).
Average UV index in December
Decatur, 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
Decatur, 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 29).
Average visibility in December
Decatur, 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).
Decatur, Alabama, USA
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