December weather forecastRockdale, TX
December
Weather in December
December, the first month of the winter in Rockdale, is still a refreshing month, with an average temperature fluctuating between 59°F (15°C) and 44.6°F (7°C).Temperature
The transition into December involves a small decrease in the average high-temperature, dipping slightly from an enjoyable 66.9°F (19.4°C) in November to a mild 59°F (15°C). During the nights in December, Rockdale observes an average low-temperature of 44.6°F (7°C).Humidity
The average relative humidity in December is 73%.Rainfall
In Rockdale, during December, the rain falls for 8.5 days and regularly aggregates up to 1.18" (30mm) of precipitation. Throughout the year, there are 128.2 rainfall days, and 18.74" (476mm) of precipitation is accumulated.Snowfall
March through December are months without snowfall in Rockdale.Daylight
With an average of 10h and 12min of daylight, December has the shortest days of the year.On the first day of December in Rockdale, sunrise is at 7:08 am and sunset at 5:26 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 5:37 pm CST.
Sunshine
With an average of 5.1h of sunshine, December has the least sunshine of the year.UV index
The months with the lowest UV index in Rockdale are January and December, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: A daily maximum UV index of 3 in December translates into the following instructions:
Adopt protective measures - Suggestions to resist sunburn are offered. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Rockdale, TX
- Average high temperature in December: 59°F
The warmest month (with the highest average high temperature) is August (96.4°F).
The month with the lowest average high temperature is January (58.1°F).
- Average low temperature in December: 44.6°F
The month with the highest average low temperature is August (75.2°F).
The coldest month (with the lowest average low temperature) is January (42.3°F).
Average pressure in December
Rockdale, TX
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Rockdale, TX
- Average wind speed in December: 8.4mph
The windiest month (with the highest average wind speed) is March (9.4mph).
The calmest month (with the lowest average wind speed) is September (6.3mph).
Average humidity in December
Rockdale, TX
- Average humidity in December: 73%
The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is August (62%).
Average rainfall in December
Rockdale, TX
- Average rainfall in December: 1.18"
The wettest month (with the highest rainfall) is May (2.87").
The driest month (with the least rainfall) is February (0.71").
Average rainfall days in December
Rockdale, TX
- Average rainfall days in December: 8.5 days
The month with the highest number of rainy days is September (14.2 days).
The month with the least rainy days is January (7.2 days).
Average snowfall in December
Rockdale, TX
- Average snowfall in December: 0"
The months with the highest snowfall are January and February (0.04").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in December
Rockdale, TX
- Average snowfall days in December: 0.1 days
The months with the highest number of snowfall days are January and February (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average daylight in December /
Average sunshine in December
Rockdale, TX
- Average daylight in December: 10h and 12min
The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).
- Average sunshine in December: 5h and 6min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in December
Rockdale, TX
- Average sunshine days in December: 19.8 days
The month with the most sunshine days is January (21.6 days).
The month with the least sunshine days is September (13.5 days).
Average UV index in December
Rockdale, TX
- 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
Rockdale, TX
- 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 August (Cloud cover 25).
Average visibility in December
Rockdale, TX
- 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).
