Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
The onset of December entails a subtle temperature shift, as the average high-temperature eases from an agreeable 68°F (20°C) in November to a moderate 60.3°F (15.7°C). Throughout the month of December, Mountain City witnesses an average low-temperature of 45.1°F (7.3°C).Humidity
The average relative humidity in December is 72%.Rainfall
In Mountain City, in December, during 9.6 rainfall days, 0.94" (24mm) of precipitation is typically accumulated. Throughout the year, there are 140.4 rainfall days, and 19.37" (492mm) of precipitation is accumulated.Snowfall
Months with snowfall are January and December. December is the first month it typically snows. Throughout December, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow. Throughout the year, there are 0.8 snowfall days, and 0.16" (4mm) of snow is accumulated.Daylight
With an average of 10h and 18min of daylight, December has the shortest days of the year in Mountain City, Texas.On the first day of December, sunrise is at 7:10 am and sunset at 5:31 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 5:42 pm CST.
Sunshine
With an average of 5.1h of sunshine, December has the least sunshine of the year.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 exposure to the Sun's UV rays for the average person.Note: The daily high UV index of 3 in December translates into this advice:
Take necessary precautions - Defending against sun damage is advocated. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are December temperatures?
What is the average humidity in December?
How many days does it rain in December?
When does it start snowing?
What is the month with the shortest days?
How many hours of daylight does Mountain City have in December?
When are sunrise and sunset in December?
What is the month with the least sunshine?
How long on average sun shines in December?
What is the month with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Mountain City, TX
- Average high temperature in December: 60.3°F
The warmest month (with the highest average high temperature) is August (95.9°F).
The month with the lowest average high temperature is January (59.4°F).
- Average low temperature in December: 45.1°F
The month with the highest average low temperature is August (74.7°F).
The coldest month (with the lowest average low temperature) is January (42.6°F).
Average pressure in December
Mountain City, TX
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The months with the lowest atmospheric pressure are May and June (29.91"Hg).
Average wind speed in December
Mountain City, TX
- Average wind speed in December: 8.3mph
The windiest months (with the highest average wind speed) are February and March (9.1mph).
The calmest month (with the lowest average wind speed) is September (6.1mph).
Average humidity in December
Mountain City, TX
- Average humidity in December: 72%
The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is August (62%).
Average rainfall in December
Mountain City, TX
- Average rainfall in December: 0.94"
The wettest month (with the highest rainfall) is May (3.58").
The driest months (with the least rainfall) are January and February (0.71").
Average rainfall days in December
Mountain City, TX
- Average rainfall days in December: 9.6 days
The month with the highest number of rainy days is September (16.3 days).
The month with the least rainy days is January (8.8 days).
Average snowfall in December
Mountain City, TX
- Average snowfall in December: 0.04"
The month with the highest snowfall is January (0.12").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0").
Average snowfall days in December
Mountain City, TX
- Average snowfall days in December: 0.1 days
The month with the highest number of snowfall days is January (0.4 days).
The months with the least snowfall days are March, April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Mountain City, TX
- Average daylight in December: 10h and 2min
The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).
- Average sunshine in December: 5h and 1min
The months with the most sunshine are July and August (Average sunshine: 10h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in December
Mountain City, TX
- Average sunshine days in December: 18.5 days
The month with the most sunshine days is January (20.2 days).
The months with the least sunshine days are May and June (11.5 days).
Average UV index in December
Mountain City, TX
- Average UV index in December: 3
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in December
Mountain City, TX
- Average cloud cover in December: 43
The month with the most cloud cover is March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility in December
Mountain City, 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).
Mountain City, Texas, USA
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