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
As November shifts into December, a minor alteration in temperatures is observed, with average highs reducing from a moderately hot 77.7°F (25.4°C) to an agreeable 71.4°F (21.9°C). During December, South Alamo sees a mean low-temperature of 56.1°F (13.4°C).Humidity
The average relative humidity in December is 68%.Rainfall
In South Alamo, Texas, in December, it is raining for 6.3 days, with typically 0.47" (12mm) of accumulated precipitation. In South Alamo, during the entire year, the rain falls for 94.1 days and collects up to 9.06" (230mm) of precipitation.Snowfall
In South Alamo, snow does not fall in February through December.Daylight
December has the shortest days of the year, with an average of 10h and 30min of daylight.On the first day of December, sunrise is at 7:03 am and sunset at 5:40 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 5:51 pm CST.
Sunshine
The month with the least sunshine is December, with an average of 5.5h of sunshine.UV index
The month with the lowest UV index is December, with an average maximum UV index of 4. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: The daily high UV index of 4 during December translates into the following recommendations:
Undertake protective steps - Recommendations to avoid sunburn are issued. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Frequently asked questions
What are December temperatures in South Alamo?
What is the average humidity in December in South Alamo?
How much does it rain in South Alamo in December?
When it does not snow in South Alamo?
Does it snow in South Alamo in December?
What is the month with the shortest days in South Alamo?
What is the average length of the day in December in South Alamo?
When is the sunrise / sunset in December in South Alamo?
What is the month with the least sunshine in South Alamo?
How long on average sun shines in December in South Alamo?
What is the month with the lowest UV index in South Alamo?
What is the UV index intensity in December in South Alamo?
Average temperature in December
South Alamo, TX
- Average high temperature in December: 71.4°F
The warmest month (with the highest average high temperature) is August (98.2°F).
The month with the lowest average high temperature is January (69.6°F).
- Average low temperature in December: 56.1°F
The month with the highest average low temperature is August (79.7°F).
The coldest month (with the lowest average low temperature) is January (53.4°F).
Average pressure in December
South Alamo, TX
- Average pressure in December: 30.07"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The months with the lowest atmospheric pressure are May and June (29.87"Hg).
Average wind speed in December
South Alamo, TX
- Average wind speed in December: 9.5mph
The windiest month (with the highest average wind speed) is May (12.4mph).
The calmest month (with the lowest average wind speed) is September (8.9mph).
Average humidity in December
South Alamo, TX
- Average humidity in December: 68%
The month with the highest relative humidity is May (69%).
The month with the lowest relative humidity is August (59%).
Average rainfall in December
South Alamo, TX
- Average rainfall in December: 0.47"
The wettest month (with the highest rainfall) is September (1.46").
The driest months (with the least rainfall) are January and February (0.31").
Average rainfall days in December
South Alamo, TX
- Average rainfall days in December: 6.3 days
The month with the highest number of rainy days is September (15.1 days).
The month with the least rainy days is February (5.4 days).
Average snowfall in December
South Alamo, TX
- Average snowfall in December: 0"
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, November and December (0").
Average snowfall days in December
South Alamo, TX
- Average snowfall days in December: 0 days
The month with the highest number of snowfall days is January (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in December /
Average sunshine in December
South Alamo, TX
- Average daylight in December: 10h and 3min
The month with the longest days is June (Average daylight: 13h and 48min).
The month with the shortest days is December (Average daylight: 10h and 30min).
- Average sunshine in December: 5h and 3min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in December
South Alamo, TX
- Average sunshine days in December: 22.5 days
The month with the most sunshine days is July (23 days).
The month with the least sunshine days is September (12.5 days).
Average UV index in December
South Alamo, TX
- Average UV index in December: 4
The months with the highest UV index are July and August (UV index 8).
The month with the lowest UV index is December (UV index 4).
Average cloud cover in December
South Alamo, TX
- Average cloud cover in December: 39
The month with the most cloud cover is December (Cloud cover 39).
The month with the least cloud cover is August (Cloud cover 18).
Average visibility in December
South Alamo, 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 Alamo, Texas, USA
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