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
During the shift to December, Mellwood records a mild decrease in average high-temperature, moving from an enjoyable 61.3°F (16.3°C) in November to a fresh 52.7°F (11.5°C). December nights observe an average temperature dip to a cold 40.5°F (4.7°C).Humidity
The months with the highest humidity are February, March and December, with an average relative humidity of 78%.Rainfall
In December, the rain falls for 7.5 days. Throughout December, 1.1" (28mm) of precipitation is accumulated. In Mellwood, Arkansas, during the entire year, the rain falls for 102.7 days and collects up to 11.02" (280mm) of precipitation.Snowfall
January, March through December are months without snowfall.Daylight
December has the shortest days of the year, with an average of 9h and 54min of daylight.On the first day of the month, sunrise is at 6:52 am and sunset at 4:54 pm. On the last day of December, sunrise is at 7:09 am and sunset at 5:04 pm CST.
Sunshine
In December, the average sunshine is 5h.UV index
The months with the lowest UV index are January, February and December, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: A maximum high UV index of 3 in December translates into the following recommendations:
Guard yourself - Precautionary measures against sun damage are advocated. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in December?
What is the most humid month?
What is the average humidity in December?
How many days does it rain in December?
When it does not snow?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
How long on average sun shines in December?
What are the months with the lowest UV index in Mellwood?
How high is the UV index in December?
Average temperature in December
Mellwood, AR
- Average high temperature in December: 52.7°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 (49.5°F).
- Average low temperature in December: 40.5°F
The month with the highest average low temperature is July (73°F).
The coldest month (with the lowest average low temperature) is January (36.1°F).
Average pressure in December
Mellwood, AR
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in December
Mellwood, AR
- Average wind speed in December: 8.5mph
The windiest month (with the highest average wind speed) is February (9.5mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in December
Mellwood, AR
- Average humidity in December: 78%
The months with the highest relative humidity are February, March and December (78%).
The month with the lowest relative humidity is October (67%).
Average rainfall in December
Mellwood, AR
- Average rainfall in December: 1.1"
The wettest months (with the highest rainfall) are April and July (1.18").
The driest month (with the least rainfall) is September (0.35").
Average rainfall days in December
Mellwood, AR
- Average rainfall days in December: 7.5 days
The month with the highest number of rainy days is July (11.9 days).
The month with the least rainy days is February (6.3 days).
Average snowfall in December
Mellwood, AR
- Average snowfall in December: 0"
The month with the highest snowfall is February (0.08").
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in December
Mellwood, AR
- Average snowfall days in December: 0.2 days
The month with the highest number of snowfall days is February (0.8 days).
The months with the least snowfall days are April, May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Mellwood, AR
- 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: 5h and 0min
The month with the most sunshine is June (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).
Average sunshine days in December
Mellwood, AR
- Average sunshine days in December: 21.9 days
The month with the most sunshine days is October (23.4 days).
The month with the least sunshine days is July (15.3 days).
Average UV index in December
Mellwood, AR
- Average UV index in December: 3
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February and December (UV index 3).
Average cloud cover in December
Mellwood, AR
- Average cloud cover in December: 44
The month with the most cloud cover is February (Cloud cover 46).
The month with the least cloud cover is June (Cloud cover 24).
Average visibility in December
Mellwood, 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).
Mellwood, Arkansas, USA
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