December weather forecastLewisville, TX
December
Weather in December
December, being the final month of the year, ushers in the chill of winter in Lewisville. The city observes short daylight of 10 hours, in contrast to the long summer days. Snowfall, while minimal, adds to the festive winter charm of the season. As December concludes, residents brace for the continuity of chill as January approaches with its cooler climes.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 fresh 55.2°F (12.9°C). During the nights in December, the temperature averages to a wintry 41.4°F (5.2°C).Humidity
The average relative humidity in December in Lewisville is 68%.Rainfall
In Lewisville, during December, the rain falls for 8.5 days and regularly aggregates up to 1.81" (46mm) of precipitation. In Lewisville, during the entire year, the rain falls for 132.1 days and collects up to 29.09" (739mm) of precipitation.Snowfall
January through March, November and December are months with snowfall. In Lewisville, in December, during 0.2 snowfall days, 0.04" (1mm) of snow is typically accumulated. In Lewisville, during the entire year, snow falls for 2.3 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 the month, sunrise is at 7:13 am and sunset at 5:21 pm. On the last day of December, sunrise is at 7:30 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 estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: An average maximum UV index of 3 in December leads to these recommendations:
Ensure safety - Sun damage prevention is strongly urged. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Lewisville, 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
Lewisville, 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
Lewisville, 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
Lewisville, 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
Lewisville, 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
Lewisville, 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
Lewisville, 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
Lewisville, 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
Lewisville, 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
Lewisville, 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
Lewisville, 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
Lewisville, 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
Lewisville, 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).
