December weather forecastCarrollton, TX
December
Weather in December
December brings winter to Carrollton, Texas, with the coolest monthly temperatures and the shortest day length. Snowfall emerges for the first time in the year, but it is infrequent and light. Frosty conditions dominate with cold winds adding to the chill. As temperatures reach the year’s lowest average, they rarely exceed 55.4°F (13°C) or dip below 41.7°F (5.4°C). Despite being the coldest month, Carrollton’s weather remains comfortable enough for residents to enjoy winter holiday celebrations and outdoor activities.Temperature
The move into December indicates a slight reduction in the average high-temperature, down from November's comfortable 64.2°F (17.9°C) to a mild 55.4°F (13°C). During the month of December, an average low-temperature of 41.7°F (5.4°C) is recorded.Humidity
In December, the average relative humidity is 68%.Rainfall
In Carrollton, during December, the rain falls for 9.4 days and regularly aggregates up to 2.05" (52mm) of precipitation. In Carrollton, during the entire year, the rain falls for 142.4 days and collects up to 31.3" (795mm) of precipitation.Snowfall
Months with snowfall are January, February, November and December. In Carrollton, during December, snow falls for 0.3 days and regularly aggregates up to 0.12" (3mm) of snow. In Carrollton, during the entire year, snow falls for 2.4 days and aggregates up to 0.94" (24mm) of snow.Daylight
With an average of 10h and 0min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:12 am and sunset at 5:20 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 5:31 pm CST.
Sunshine
The month with the least sunshine is December, with an average of 5.6h of sunshine.UV index
The month with the lowest UV index in Carrollton is December, with an average maximum UV index of 3. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: In December, the maximum UV index of 3 translates into these guidelines:
Exercise prevention - Protecting skin and eyes from harm is required. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Carrollton, TX
- Average high temperature in December: 55.4°F
The warmest month (with the highest average high temperature) is August (96.3°F).
The month with the lowest average high temperature is January (54.3°F).
- Average low temperature in December: 41.7°F
The month with the highest average low temperature is August (77°F).
The coldest month (with the lowest average low temperature) is January (38.8°F).
Average pressure in December
Carrollton, TX
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in December
Carrollton, TX
- Average wind speed in December: 8.5mph
The windiest month (with the highest average wind speed) is April (10mph).
The calmest month (with the lowest average wind speed) is September (6.7mph).
Average humidity in December
Carrollton, TX
- Average humidity in December: 68%
The month with the highest relative humidity is May (71%).
The month with the lowest relative humidity is August (54%).
Average rainfall in December
Carrollton, TX
- Average rainfall in December: 2.05"
The wettest month (with the highest rainfall) is October (4.02").
The driest month (with the least rainfall) is February (1.73").
Average rainfall days in December
Carrollton, TX
- Average rainfall days in December: 9.4 days
The month with the highest number of rainy days is May (15 days).
The month with the least rainy days is January (6.6 days).
Average snowfall in December
Carrollton, TX
- Average snowfall in December: 0.12"
The month with the highest snowfall is February (0.59").
The months with the least snowfall are March, April, May, June, July, August, September and October (0").
Average snowfall days in December
Carrollton, TX
- Average snowfall days in December: 0.3 days
The month with the highest number of snowfall days is February (1.1 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
Carrollton, TX
- 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: 5h and 36min
The months with the most sunshine are July and August (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).
Average sunshine days in December
Carrollton, TX
- Average sunshine days in December: 20 days
The month with the most sunshine days is January (23 days).
The month with the least sunshine days is September (13.8 days).
Average UV index in December
Carrollton, TX
- Average UV index in December: 3
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in December
Carrollton, TX
- Average cloud cover in December: 37
The month with the most cloud cover is March (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 20).
Average visibility in December
Carrollton, 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).





