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
Decatur's progression into December includes a drop in the average high-temperature, from a refreshing 57°F (13.9°C) in November to a chilly 46.6°F (8.1°C). December nights in Decatur cool down to an average low-temperature of 32°F (0°C).Humidity
The average relative humidity in December is 74%.Rainfall
In Decatur, in December, during 8.7 rainfall days, 2.05" (52mm) of precipitation is typically accumulated. Throughout the year, there are 139.7 rainfall days, and 31.02" (788mm) of precipitation is accumulated.Snowfall
Months with snowfall in Decatur are January through May, November and December. In Decatur, in December, snow falls for 2.6 days, with typically accumulated 0.63" (16mm) of snow. In Decatur, during the entire year, snow falls for 13.9 days and aggregates up to 4.8" (122mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 42min of daylight.On the first day of December in Decatur, sunrise is at 7:11 am and sunset at 5:02 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 5:13 pm CST.
Sunshine
The months with the least sunshine in Decatur, Arkansas, are January and December, with an average of 5.4h of sunshine.UV index
January and December, with an average maximum UV index of 2, are months with the lowest UV index in Decatur. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: In December, the maximum UV index of 2 suggests this advice:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Frequently asked questions
What are the temperatures in Decatur in December?
What is the average humidity in December in Decatur?
How many days does it rain in December in Decatur?
How much does it snow in Decatur in December?
What is the month with the shortest days in Decatur?
What is the average length of the day in December in Decatur?
When is the sunrise / sunset in December in Decatur?
What is the month with the least sunshine in Decatur?
How many hours of sunshine does Decatur have in December?
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, AR
- Average high temperature in December: 46.6°F
The warmest month (with the highest average high temperature) is July (90.5°F).
The month with the lowest average high temperature is January (44.4°F).
- Average low temperature in December: 32°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 (28.4°F).
Average pressure in December
Decatur, AR
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The months with the lowest atmospheric pressure are April and June (29.93"Hg).
Average wind speed in December
Decatur, AR
- Average wind speed in December: 8.6mph
The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is July (6.7mph).
Average humidity in December
Decatur, AR
- Average humidity in December: 74%
The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is October (70%).
Average rainfall in December
Decatur, AR
- Average rainfall in December: 2.05"
The wettest month (with the highest rainfall) is May (4.37").
The driest month (with the least rainfall) is February (1.89").
Average rainfall days in December
Decatur, AR
- Average rainfall days in December: 8.7 days
The month with the highest number of rainy days is May (15.5 days).
The months with the least rainy days are January and November (8.5 days).
Average snowfall in December
Decatur, AR
- Average snowfall in December: 0.63"
The month with the highest snowfall is February (1.46").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Decatur, AR
- Average snowfall days in December: 2.6 days
The month with the highest number of snowfall days is February (4.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Decatur, AR
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in December: 5h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The months with the least sunshine are January and December (Average sunshine: 5h and 24min).
Average sunshine days in December
Decatur, AR
- Average sunshine days in December: 19.2 days
The month with the most sunshine days is December (19.2 days).
The months with the least sunshine days are March and April (13.3 days).
Average UV index in December
Decatur, AR
- Average UV index in December: 2
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in December
Decatur, AR
- Average cloud cover in December: 41
The months with the most cloud cover are February and March (Cloud cover 45).
The month with the least cloud cover is August (Cloud cover 24).
Average visibility in December
Decatur, AR
- 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, Arkansas, USA
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