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's arrival comes with a decrease in the average high-temperature, moving from a mild 57.6°F (14.2°C) in November to a chilly 48.4°F (9.1°C). In December, Black Rock reports a consistent average low-temperature of 36.1°F (2.3°C) during the nights.Humidity
In December, the average relative humidity is 76%.Rainfall
In Black Rock, Arkansas, in December, during 9.7 rainfall days, 2.4" (61mm) of precipitation is typically accumulated. In Black Rock, during the entire year, the rain falls for 145.5 days and collects up to 35.47" (901mm) of precipitation.Snowfall
Months with snowfall are January through March, October through December. In Black Rock, in December, snow falls for 0.7 days, with typically accumulated 0.59" (15mm) of snow. In Black Rock, during the entire year, snow falls for 7.1 days and aggregates up to 3.82" (97mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 48min of daylight.On the first day of December, sunrise is at 6:57 am and sunset at 4:50 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 5:00 pm CST.
Sunshine
In December, the average sunshine is 5.2h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for the average person.Note: The daily maximum UV index of 2 in December interprets into the following advice:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average December temperature in Black Rock?
What is the average humidity in December?
How many days does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When is the sunrise / sunset in December?
How many hours of sunshine does Black Rock have in December?
What is the month with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Black Rock, AR
- Average high temperature in December: 48.4°F
The warmest month (with the highest average high temperature) is July (89.4°F).
The month with the lowest average high temperature is January (45.1°F).
- Average low temperature in December: 36.1°F
The month with the highest average low temperature is July (71.6°F).
The coldest month (with the lowest average low temperature) is January (31.5°F).
Average pressure in December
Black Rock, 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 (29.93"Hg).
Average wind speed in December
Black Rock, AR
- Average wind speed in December: 8.5mph
The windiest month (with the highest average wind speed) is February (9.4mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).
Average humidity in December
Black Rock, AR
- Average humidity in December: 76%
The month with the highest relative humidity is March (78%).
The month with the lowest relative humidity is October (67%).
Average rainfall in December
Black Rock, AR
- Average rainfall in December: 2.4"
The wettest month (with the highest rainfall) is April (4.61").
The driest month (with the least rainfall) is September (2.2").
Average rainfall days in December
Black Rock, AR
- Average rainfall days in December: 9.7 days
The month with the highest number of rainy days is May (15.6 days).
The month with the least rainy days is January (8.7 days).
Average snowfall in December
Black Rock, AR
- Average snowfall in December: 0.59"
The month with the highest snowfall is February (1.18").
The months with the least snowfall are April, May, June, July, August and September (0").
Average snowfall days in December
Black Rock, AR
- Average snowfall days in December: 0.7 days
The month with the highest number of snowfall days is January (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
Black Rock, AR
- Average daylight in December: 9h and 5min
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 48min).
- Average sunshine in December: 5h and 1min
The months with the most sunshine are June and July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).
Average sunshine days in December
Black Rock, AR
- Average sunshine days in December: 19 days
The month with the most sunshine days is October (19.8 days).
The months with the least sunshine days are April and May (13.8 days).
Average UV index in December
Black Rock, AR
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in December
Black Rock, AR
- Average cloud cover in December: 44
The months with the most cloud cover are February and March (Cloud cover 46).
The month with the least cloud cover is June (Cloud cover 25).
Average visibility in December
Black Rock, 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).
Black Rock, Arkansas, USA
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