December weather forecastRockdale, TN
December
Weather in December
December, the first month of the winter in Rockdale, is also a frosty month, with an average temperature ranging between max 49.6°F (9.8°C) and min 35.8°F (2.1°C).Temperature
In the transition to December, Rockdale observes a minor drop in the average high-temperature, shifting from a refreshing 57.4°F (14.1°C) in November to a frosty 49.6°F (9.8°C). Rockdale, during the month of December, experiences an average low-temperature of 35.8°F (2.1°C).Humidity
The months with the highest humidity are March and December, with an average relative humidity of 79%.Rainfall
In Rockdale, during December, the rain falls for 12.7 days and regularly aggregates up to 3.11" (79mm) of precipitation. In Rockdale, during the entire year, the rain falls for 172.4 days and collects up to 38.43" (976mm) of precipitation.Snowfall
January through April, November and December are months with snowfall. In Rockdale, in December, snow falls for 1.4 days, with typically accumulated 0.43" (11mm) of snow. In Rockdale, during the entire year, snow falls for 8.9 days and aggregates up to 2.8" (71mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 48min of daylight.On the first day of the month, sunrise is at 6:40 am and sunset at 4:36 pm. On the last day of December, sunrise is at 6:58 am and sunset at 4:46 pm CST.
Sunshine
In Rockdale, the average sunshine in December is 4.7h.UV index
With an average maximum UV index of 2, December is the month with the lowest UV index. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In December, a regular UV index of 2 translates into these guidelines:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Rockdale, TN
- Average high temperature in December: 49.6°F
The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (45.3°F).
- Average low temperature in December: 35.8°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (30.9°F).
Average pressure in December
Rockdale, TN
- Average pressure in December: 30.15"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
Rockdale, TN
- Average wind speed in December: 8mph
The windiest month (with the highest average wind speed) is February (8.5mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).
Average humidity in December
Rockdale, TN
- Average humidity in December: 79%
The months with the highest relative humidity are March and December (79%).
The month with the lowest relative humidity is October (74%).
Average rainfall in December
Rockdale, TN
- Average rainfall in December: 3.11"
The wettest months (with the highest rainfall) are February and July (4.06").
The driest month (with the least rainfall) is September (2.36").
Average rainfall days in December
Rockdale, TN
- Average rainfall days in December: 12.7 days
The month with the highest number of rainy days is July (19.6 days).
The month with the least rainy days is November (9.9 days).
Average snowfall in December
Rockdale, TN
- Average snowfall in December: 0.43"
The month with the highest snowfall is February (1.06").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Rockdale, TN
- Average snowfall days in December: 1.4 days
The months with the highest number of snowfall days are January and February (2.8 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
Rockdale, TN
- Average daylight in December: 9h and 48min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in December: 4h and 42min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The months with the least sunshine are January and February (Average sunshine: 4h and 36min).
Average sunshine days in December
Rockdale, TN
- Average sunshine days in December: 15.5 days
The month with the most sunshine days is October (18.5 days).
The month with the least sunshine days is July (9.9 days).
Average UV index in December
Rockdale, TN
- 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
Rockdale, TN
- Average cloud cover in December: 51
The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is June (Cloud cover 30).
Average visibility in December
Rockdale, TN
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
