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
South Mountain's progression into December involves a minor drop in the average high-temperature, slightly receding from a comfortable 65.8°F (18.8°C) in November to a mild 57.7°F (14.3°C). South Mountain observes an average nighttime temperature of 42.4°F (5.8°C) during December.Humidity
In December, the average relative humidity is 69%.Rainfall
In South Mountain, during December, the rain falls for 9.1 days and regularly aggregates up to 1.61" (41mm) of precipitation. Throughout the year, in South Mountain, there are 129.1 rainfall days, and 25.71" (653mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through March and December. December is the first month it typically snows in South Mountain, Texas. Throughout December, in the average 0.4 snowfall days, it receives 0.04" (1mm) of snow. Throughout the year, in South Mountain, there are 2.1 snowfall days, and 0.51" (13mm) of snow is accumulated.Daylight
With an average of 10h and 6min of daylight, December has the shortest days of the year.On the first day of December in South Mountain, sunrise is at 7:12 am and sunset at 5:27 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 5:38 pm CST.
Sunshine
December has the least sunshine of the year, with an average of 5.5h of sunshine.UV index
With an average maximum UV index of 3, December is the month with the lowest UV index in South Mountain, Texas. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for average individuals.Note: An average maximum UV index of 3 in December leads to these recommendations:
Be vigilant - Suggestions to stave off sun damage are provided. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
What is the usual temperature for South Mountain in December?
What is the average humidity in December in South Mountain?
How many days does it rain in December in South Mountain?
When does it start snowing in South Mountain?
What is the month with the shortest days in South Mountain?
How many hours of daylight does South Mountain have in December?
What time are sunrise and sunset in December in South Mountain?
What is the month with the least sunshine in South Mountain?
How long on average sun shines in December in South Mountain?
When is the lowest UV index in South Mountain?
What is the UV index reading in December in South Mountain?
Average temperature in December
South Mountain, TX
- Average high temperature in December: 57.7°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 (57°F).
- Average low temperature in December: 42.4°F
The month with the highest average low temperature is August (75.7°F).
The coldest month (with the lowest average low temperature) is January (40.6°F).
Average pressure in December
South Mountain, TX
- Average pressure in December: 30.12"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
South Mountain, TX
- Average wind speed in December: 9.3mph
The windiest month (with the highest average wind speed) is March (11mph).
The calmest month (with the lowest average wind speed) is September (7.3mph).
Average humidity in December
South Mountain, TX
- Average humidity in December: 69%
The month with the highest relative humidity is May (74%).
The month with the lowest relative humidity is August (56%).
Average rainfall in December
South Mountain, TX
- Average rainfall in December: 1.61"
The wettest month (with the highest rainfall) is October (3.86").
The driest month (with the least rainfall) is November (1.18").
Average rainfall days in December
South Mountain, TX
- Average rainfall days in December: 9.1 days
The month with the highest number of rainy days is May (14.8 days).
The month with the least rainy days is January (6.9 days).
Average snowfall in December
South Mountain, TX
- Average snowfall in December: 0.04"
The month with the highest snowfall is February (0.35").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in December
South Mountain, TX
- Average snowfall days in December: 0.4 days
The month with the highest number of snowfall days is February (1.2 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
South Mountain, TX
- Average daylight in December: 10h and 1min
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 3min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in December
South Mountain, TX
- Average sunshine days in December: 19.8 days
The month with the most sunshine days is January (22.3 days).
The month with the least sunshine days is May (13.5 days).
Average UV index in December
South Mountain, TX
- Average UV index in December: 3
The month with the highest UV index is July (UV index 8).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in December
South Mountain, TX
- Average cloud cover in December: 38
The month with the most cloud cover is March (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility in December
South Mountain, 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).
South Mountain, Texas, USA
Weather forecast for your location
2. Allow the app to use your location
