December weather forecastRosemary, AL
December
Weather in December
The first month of the winter, December, is also a moderate month in Rosemary, Alabama, with an average temperature ranging between min 41.9°F (5.5°C) and max 56.8°F (13.8°C).Temperature
December marks a gentle change in average high-temperature, declining from November's enjoyable 63.9°F (17.7°C) to a still refreshing 56.8°F (13.8°C). An average low-temperature of 41.9°F (5.5°C) is recorded during the nights in December.Humidity
The most humid month is December, with an average relative humidity of 80%.Rainfall
In Rosemary, in December, during 13.6 rainfall days, 3.78" (96mm) of precipitation is typically accumulated. Throughout the year, there are 168 rainfall days, and 37.95" (964mm) of precipitation is accumulated.Snowfall
January, February, November and December are months with snowfall. In Rosemary, in December, snow falls for 0.5 days, with typically accumulated 0.35" (9mm) of snow. In Rosemary, during the entire year, snow falls for 2.7 days and aggregates up to 1.1" (28mm) of snow.Daylight
The month with the shortest days is December, with an average of 10h and 0min of daylight.On the first day of the month, sunrise is at 6:34 am and sunset at 4:44 pm. On the last day of December, sunrise is at 6:52 am and sunset at 4:55 pm CST.
Sunshine
The months with the least sunshine are February and December, with an average of 4.9h of sunshine.UV index
January and December, with an average maximum UV index of 3, are months with the lowest UV index in Rosemary. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: The daily high UV index of 3 in December translates into this advice:
Undertake protective steps - Preventing sun damage is advised. Direct Sun exposure should be minimized especially during midday when radiation is most intense. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Rosemary, AL
- Average high temperature in December: 56.8°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 (53.4°F).
- Average low temperature in December: 41.9°F
The month with the highest average low temperature is August (72°F).
The coldest month (with the lowest average low temperature) is January (37.9°F).
Average pressure in December
Rosemary, AL
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June and August (29.97"Hg).
Average wind speed in December
Rosemary, AL
- Average wind speed in December: 7mph
The windiest months (with the highest average wind speed) are January, February and March (7.3mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).
Average humidity in December
Rosemary, 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 (69%).
Average rainfall in December
Rosemary, AL
- Average rainfall in December: 3.78"
The wettest month (with the highest rainfall) is April (4.17").
The driest month (with the least rainfall) is September (2.2").
Average rainfall days in December
Rosemary, AL
- Average rainfall days in December: 13.6 days
The month with the highest number of rainy days is July (21.4 days).
The month with the least rainy days is November (8.7 days).
Average snowfall in December
Rosemary, AL
- Average snowfall in December: 0.35"
The month with the highest snowfall is January (0.47").
The months with the least snowfall are March, April, May, June, July, August, September and October (0").
Average snowfall days in December
Rosemary, AL
- Average snowfall days in December: 0.5 days
The month with the highest number of snowfall days is January (1.2 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
Rosemary, AL
- Average daylight in December: 10h and 0min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in December: 4h and 54min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The months with the least sunshine are February and December (Average sunshine: 4h and 54min).
Average sunshine days in December
Rosemary, AL
- Average sunshine days in December: 15.5 days
The month with the most sunshine days is October (21.1 days).
The month with the least sunshine days is July (8.6 days).
Average UV index in December
Rosemary, AL
- Average UV index in December: 3
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in December
Rosemary, AL
- Average cloud cover in December: 47
The months with the most cloud cover are February and December (Cloud cover 47).
The months with the least cloud cover are September and October (Cloud cover 29).
Average visibility in December
Rosemary, AL
- 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).
