December weather forecastRockwell, AR
December
Weather in December
December, the first month of the winter in Rockwell, is also a fresh month, with temperature in the range of an average low of 36.9°F (2.7°C) and an average high of 51.6°F (10.9°C).Temperature
A mild shift in the average high-temperature occurs in December, reducing from a mild 59.9°F (15.5°C) in November to a cool 51.6°F (10.9°C). In Rockwell, December nights cool down to an average of 36.9°F (2.7°C).Humidity
In Rockwell, the average relative humidity in December is 79%.Rainfall
In Rockwell, during December, the rain falls for 10.5 days and regularly aggregates up to 2.76" (70mm) of precipitation. In Rockwell, during the entire year, the rain falls for 147.7 days and collects up to 33.23" (844mm) of precipitation.Snowfall
Months with snowfall in Rockwell are January through March, November and December. In Rockwell, during December, snow falls for 0.4 days and regularly aggregates up to 0.28" (7mm) of snow. Throughout the year, there are 4.2 snowfall days, and 1.93" (49mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 54min of daylight.On the first day of the month, sunrise is at 7:01 am and sunset at 5:02 pm. On the last day of December, in Rockwell, sunrise is at 7:18 am and sunset at 5:12 pm CST.
Sunshine
The months with the least sunshine in Rockwell, Arkansas, are January, February and December, with an average of 5.1h of sunshine.UV index
With an average maximum UV index of 2, December is the month with the lowest UV index in Rockwell. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: In December, a regular UV index of 2 translates into these guidelines:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Rockwell, AR
- Average high temperature in December: 51.6°F
The warmest month (with the highest average high temperature) is July (91.9°F).
The month with the lowest average high temperature is January (49.3°F).
- Average low temperature in December: 36.9°F
The month with the highest average low temperature is July (70.7°F).
The coldest month (with the lowest average low temperature) is January (33.4°F).
Average pressure in December
Rockwell, 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 (29.94"Hg).
Average wind speed in December
Rockwell, AR
- Average wind speed in December: 6.2mph
The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in December
Rockwell, AR
- Average humidity in December: 79%
The month with the highest relative humidity is March (80%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Rockwell, AR
- Average rainfall in December: 2.76"
The wettest month (with the highest rainfall) is April (3.9").
The driest month (with the least rainfall) is September (1.93").
Average rainfall days in December
Rockwell, AR
- Average rainfall days in December: 10.5 days
The month with the highest number of rainy days is August (15.9 days).
The month with the least rainy days is January (9.2 days).
Average snowfall in December
Rockwell, AR
- Average snowfall in December: 0.28"
The month with the highest snowfall is February (0.94").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Rockwell, AR
- Average snowfall days in December: 0.4 days
The month with the highest number of snowfall days is February (1.7 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Rockwell, AR
- Average daylight in December: 9h and 54min
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 6min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 6min).
Average sunshine days in December
Rockwell, AR
- Average sunshine days in December: 19.1 days
The months with the most sunshine days are January and October (19.4 days).
The month with the least sunshine days is August (13.5 days).
Average UV index in December
Rockwell, AR
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in December
Rockwell, AR
- Average cloud cover in December: 45
The month with the most cloud cover is February (Cloud cover 49).
The months with the least cloud cover are June, July, August and September (Cloud cover 30).
Average visibility in December
Rockwell, AR
- Average visibility in December: 5mi
The months with the highest visibility are April, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March, May and December (5mi).
