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
The shift from November to December includes a small decrease in the average high-temperature, from a refreshing 59.5°F (15.3°C) to a fresh 51.4°F (10.8°C). Nightly temperatures drop to an average low of 37.9°F (3.3°C) in December.Humidity
With an average relative humidity of 80%, December is the most humid month.Rainfall
In December, in Rockwood, the rain falls for 13 days. Throughout December, 4.13" (105mm) of precipitation is accumulated. Throughout the year, there are 176 rainfall days, and 41.97" (1066mm) of precipitation is accumulated.Snowfall
January through March, November and December are months with snowfall. In December, it is snowing for 1.5 days. Throughout December, 0.35" (9mm) of snow is accumulated. In Rockwood, during the entire year, snow falls for 7.2 days and aggregates up to 2.05" (52mm) of snow.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 6:40 am and sunset at 4:40 pm. On the last day of December, sunrise is at 6:57 am and sunset at 4:51 pm CST.
Sunshine
In December, the average sunshine is 4.7h.UV index
December is the month with the lowest UV index, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the ordinary person.Note: An average maximum UV index of 2 in December leads to these recommendations:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in December?
What is the most humid month?
What is the average humidity in December?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Rockwood have in December?
When is the sunrise / sunset in December?
How long on average sun shines in December?
When is the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Rockwood, AL
- Average high temperature in December: 51.4°F
The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (47.8°F).
- Average low temperature in December: 37.9°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 (33.1°F).
Average pressure in December
Rockwood, AL
- 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 (29.97"Hg).
Average wind speed in December
Rockwood, AL
- Average wind speed in December: 7.7mph
The windiest month (with the highest average wind speed) is February (8.3mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).
Average humidity in December
Rockwood, AL
- Average humidity in December: 80%
The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (73%).
Average rainfall in December
Rockwood, AL
- Average rainfall in December: 4.13"
The wettest month (with the highest rainfall) is February (4.57").
The driest month (with the least rainfall) is November (2.44").
Average rainfall days in December
Rockwood, AL
- Average rainfall days in December: 13 days
The month with the highest number of rainy days is July (18.9 days).
The month with the least rainy days is November (10.5 days).
Average snowfall in December
Rockwood, AL
- Average snowfall in December: 0.35"
The month with the highest snowfall is February (0.75").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Rockwood, AL
- Average snowfall days in December: 1.5 days
The month with the highest number of snowfall days is February (2.2 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
Rockwood, 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 4min
The months with the most sunshine are June and July (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in December
Rockwood, AL
- Average sunshine days in December: 15.9 days
The month with the most sunshine days is October (18.3 days).
The month with the least sunshine days is July (10.8 days).
Average UV index in December
Rockwood, AL
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in December
Rockwood, AL
- Average cloud cover in December: 50
The month with the most cloud cover is February (Cloud cover 51).
The months with the least cloud cover are June and September (Cloud cover 31).
Average visibility in December
Rockwood, AL
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January, May and July (5mi).
Rockwood, Alabama, USA
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