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 start of December comes with a reduction in the average high-temperature, receding from a mild 57.7°F (14.3°C) in November to a chilly 48°F (8.9°C). During the month of December, an average low-temperature of 30.9°F (-0.6°C) is recorded.Humidity
In December, the average relative humidity is 53%.Rainfall
In San Antonio, in December, it is raining for 5.6 days, with typically 0.63" (16mm) of accumulated precipitation. In San Antonio, during the entire year, the rain falls for 90.7 days and collects up to 9.8" (249mm) of precipitation.Snowfall
Months with snowfall are January through March, November and December. The month with the most snowfall is December, when snow falls for 2.1 days and typically aggregates up to 1.46" (37mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 54min of daylight.On the first day of December, sunrise is at 6:55 am and sunset at 4:58 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 5:09 pm MST.
Sunshine
With an average of 7.1h of sunshine, December has the least sunshine of the year.UV index
November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum UV index, 2 during December, leads to the following recommendations:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are December temperatures in San Antonio?
What is the average humidity in December?
How much does it rain in San Antonio in December?
What is the snowiest month?
How much does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When is the sunrise / sunset in December in San Antonio?
What is the month with the least sunshine?
How long on average sun shines in December?
What are the months with the lowest UV index in San Antonio?
What is the UV index intensity in December?
Average temperature in December
San Antonio, NM
- Average high temperature in December: 48°F
The warmest month (with the highest average high temperature) is June (88.3°F).
The month with the lowest average high temperature is January (47.8°F).
- Average low temperature in December: 30.9°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (29.8°F).
Average pressure in December
San Antonio, NM
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are April, May and June (29.88"Hg).
Average wind speed in December
San Antonio, NM
- Average wind speed in December: 6.8mph
The windiest month (with the highest average wind speed) is April (9.5mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in December
San Antonio, NM
- Average humidity in December: 53%
The month with the highest relative humidity is January (54%).
The months with the lowest relative humidity are April, May and June (25%).
Average rainfall in December
San Antonio, NM
- Average rainfall in December: 0.63"
The wettest month (with the highest rainfall) is August (1.73").
The driest month (with the least rainfall) is April (0.39").
Average rainfall days in December
San Antonio, NM
- Average rainfall days in December: 5.6 days
The month with the highest number of rainy days is July (15.2 days).
The month with the least rainy days is November (3.6 days).
Average snowfall in December
San Antonio, NM
- Average snowfall in December: 1.46"
The month with the highest snowfall is December (1.46").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
San Antonio, NM
- Average snowfall days in December: 2.1 days
The month with the highest number of snowfall days is December (2.1 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
San Antonio, NM
- Average daylight in December: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in December: 7h and 1min
The month with the most sunshine is June (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 7h and 6min).
Average sunshine days in December
San Antonio, NM
- Average sunshine days in December: 23.1 days
The month with the most sunshine days is November (25.5 days).
The month with the least sunshine days is August (10.7 days).
Average UV index in December
San Antonio, NM
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are November and December (UV index 2).
Average cloud cover in December
San Antonio, NM
- Average cloud cover in December: 19
The month with the most cloud cover is December (Cloud cover 19).
The month with the least cloud cover is October (Cloud cover 11).
Average visibility in December
San Antonio, NM
- 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).
San Antonio, New Mexico, USA
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