December weather forecastLake Dallas, TX
December
Weather in December
December, the first month of the winter in Lake Dallas, is still a cool month, with temperature in the range of an average high of 55.2°F (12.9°C) and an average low of 41.4°F (5.2°C).Temperature
The beginning of December marks a decrease in the average high-temperature, transitioning from a comfortable 64.4°F (18°C) in November to a cool 55.2°F (12.9°C). Throughout December, a steady low-temperature average of 41.4°F (5.2°C) is noted.Humidity
In December, the average relative humidity in Lake Dallas is 68%.Rainfall
In Lake Dallas, in December, it is raining for 8.5 days, with typically 1.81" (46mm) of accumulated precipitation. Throughout the year, there are 132.1 rainfall days, and 29.09" (739mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through March, November and December. In Lake Dallas, in December, during 0.2 snowfall days, 0.04" (1mm) of snow is typically accumulated. Throughout the year, there are 2.3 snowfall days, and 0.94" (24mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 10h and 0min of daylight.On the first day of December in Lake Dallas, sunrise is at 7:13 am and sunset at 5:20 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 5:31 pm CST.
Sunshine
December has the least sunshine of the year, with an average of 5.6h of sunshine.UV index
December is the month with the lowest UV index, with an average maximum UV index of 3. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for average individuals.Note: The maximum UV index, 3 during December, leads to the following recommendations:
Take necessary precautions - Defending against sun damage is advocated. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Lake Dallas, TX
- Average high temperature in December: 55.2°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 (54.1°F).
- Average low temperature in December: 41.4°F
The month with the highest average low temperature is August (76.8°F).
The coldest month (with the lowest average low temperature) is January (38.5°F).
Average pressure in December
Lake Dallas, 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
Lake Dallas, TX
- Average wind speed in December: 8.6mph
The windiest months (with the highest average wind speed) are March and April (10.1mph).
The calmest month (with the lowest average wind speed) is September (6.8mph).
Average humidity in December
Lake Dallas, 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 (53%).
Average rainfall in December
Lake Dallas, TX
- Average rainfall in December: 1.81"
The wettest month (with the highest rainfall) is October (3.74").
The driest months (with the least rainfall) are January and February (1.57").
Average rainfall days in December
Lake Dallas, TX
- Average rainfall days in December: 8.5 days
The month with the highest number of rainy days is May (14.3 days).
The month with the least rainy days is January (6.6 days).
Average snowfall in December
Lake Dallas, TX
- Average snowfall in December: 0.04"
The month with the highest snowfall is February (0.63").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Lake Dallas, TX
- Average snowfall days in December: 0.2 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
Lake Dallas, 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
Lake Dallas, TX
- Average sunshine days in December: 20.5 days
The month with the most sunshine days is January (23.2 days).
The month with the least sunshine days is September (14.9 days).
Average UV index in December
Lake Dallas, 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
Lake Dallas, TX
- Average cloud cover in December: 37
The month with the most cloud cover is March (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 20).
Average visibility in December
Lake Dallas, 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).





