December weather forecastMustang, TX
December
Weather in December
December, the first month of the winter in Mustang, is also a moderate month, with an average temperature fluctuating between 56.8°F (13.8°C) and 42.6°F (5.9°C).Temperature
The arrival of December is marked by a minor reduction in average high-temperature, sliding from a refreshing 65.3°F (18.5°C) in November to a mild 56.8°F (13.8°C). Nighttime temperature in Mustang dips to a mean of 42.6°F (5.9°C) during December.Humidity
In December, the average relative humidity is 73%.Rainfall
In Mustang, in December, during 8 rainfall days, 0.98" (25mm) of precipitation is typically accumulated. Throughout the year, in Mustang, there are 108.8 rainfall days, and 15.08" (383mm) of precipitation is accumulated.Snowfall
April through December are months without snowfall.Daylight
The month with the shortest days in Mustang, Texas, is December, with an average of 10h and 6min of daylight.On the first day of the month, sunrise is at 7:08 am and sunset at 5:21 pm. On the last day of December, sunrise is at 7:26 am and sunset at 5:31 pm CST.
Sunshine
With an average of 5.2h of sunshine, December has the least sunshine of the year in Mustang.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 3. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: The maximum daily UV index of 3 in December converts into the following recommendations:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. Around midday, solar radiation is most harmful; hence, exposure should be limited. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Mustang, TX
- Average high temperature in December: 56.8°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 (55.4°F).
- Average low temperature in December: 42.6°F
The month with the highest average low temperature is August (74.8°F).
The coldest month (with the lowest average low temperature) is January (40.1°F).
Average pressure in December
Mustang, TX
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Mustang, TX
- Average wind speed in December: 8.6mph
The windiest month (with the highest average wind speed) is March (9.6mph).
The calmest month (with the lowest average wind speed) is September (6.3mph).
Average humidity in December
Mustang, 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 (61%).
Average rainfall in December
Mustang, TX
- Average rainfall in December: 0.98"
The wettest month (with the highest rainfall) is May (2.13").
The driest month (with the least rainfall) is November (0.71").
Average rainfall days in December
Mustang, TX
- Average rainfall days in December: 8 days
The month with the highest number of rainy days is May (12.4 days).
The month with the least rainy days is January (5.7 days).
Average snowfall in December
Mustang, TX
- Average snowfall in December: 0"
The month with the highest snowfall is February (0.28").
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0").
Average snowfall days in December
Mustang, TX
- Average snowfall days in December: 0.2 days
The month with the highest number of snowfall days is February (0.9 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in December /
Average sunshine in December
Mustang, TX
- Average daylight in December: 10h and 6min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in December: 5h and 12min
The month with the most sunshine is August (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).
Average sunshine days in December
Mustang, TX
- Average sunshine days in December: 22.3 days
The month with the most sunshine days is January (24.3 days).
The month with the least sunshine days is May (15.4 days).
Average UV index in December
Mustang, 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
Mustang, TX
- Average cloud cover in December: 42
The months with the most cloud cover are February and March (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 23).
Average visibility in December
Mustang, 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).





