December weather forecastAllen, TX
December
Weather in December
December, the first month of the winter in Allen, is also a fresh month, with an average temperature varying between 54.9°F (12.7°C) and 41.2°F (5.1°C).Temperature
As December arrives, Allen's weather displays a decrease in high-temperatures, transitioning from November's enjoyable 63.9°F (17.7°C) to a cool 54.9°F (12.7°C). In Allen, the average nighttime temperature during December is a cold 41.2°F (5.1°C).Humidity
The average relative humidity in December is 70%.Rainfall
In Allen, in December, during 9.6 rainfall days, 2.2" (56mm) of precipitation is typically accumulated. Throughout the year, there are 143 rainfall days, and 33.15" (842mm) of precipitation is accumulated.Snowfall
Months with snowfall are January, February, November and December. In Allen, in December, snow falls for 0.4 days, with typically accumulated 0.12" (3mm) of snow. In Allen, during the entire year, snow falls for 2.9 days and aggregates up to 1.14" (29mm) 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 5:19 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 5:30 pm CST.
Sunshine
The month with the least sunshine is December, with an average of 5.5h of sunshine.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 3 in December interprets into the following recommendations:
Preventative actions are necessary - Suggestions to safeguard against sun damage are in order. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Allen, TX
- Average high temperature in December: 54.9°F
The warmest month (with the highest average high temperature) is August (95.5°F).
The month with the lowest average high temperature is January (54°F).
- Average low temperature in December: 41.2°F
The month with the highest average low temperature is July (76.1°F).
The coldest month (with the lowest average low temperature) is January (38.7°F).
Average pressure in December
Allen, 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 (29.91"Hg).
Average wind speed in December
Allen, TX
- Average wind speed in December: 8.6mph
The windiest months (with the highest average wind speed) are March and April (9.9mph).
The calmest month (with the lowest average wind speed) is September (6.8mph).
Average humidity in December
Allen, TX
- Average humidity in December: 70%
The month with the highest relative humidity is May (73%).
The month with the lowest relative humidity is August (56%).
Average rainfall in December
Allen, TX
- Average rainfall in December: 2.2"
The wettest month (with the highest rainfall) is October (4.21").
The driest month (with the least rainfall) is January (1.85").
Average rainfall days in December
Allen, TX
- Average rainfall days in December: 9.6 days
The month with the highest number of rainy days is May (14.6 days).
The month with the least rainy days is January (7.1 days).
Average snowfall in December
Allen, TX
- Average snowfall in December: 0.12"
The month with the highest snowfall is February (0.71").
The months with the least snowfall are March, April, May, June, July, August, September and October (0").
Average snowfall days in December
Allen, TX
- Average snowfall days in December: 0.4 days
The month with the highest number of snowfall days is February (1.3 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
Allen, 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 30min
The month with the most sunshine is August (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in December
Allen, TX
- Average sunshine days in December: 19.4 days
The month with the most sunshine days is January (22.5 days).
The month with the least sunshine days is April (13.9 days).
Average UV index in December
Allen, 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
Allen, TX
- Average cloud cover in December: 38
The months with the most cloud cover are February and March (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 20).
Average visibility in December
Allen, 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).
