December weather forecastAlamo Heights, TX
December
Weather in December
December, the first month of the winter in Alamo Heights, is still a comfortable month, with an average temperature varying between 46.2°F (7.9°C) and 61.5°F (16.4°C).Temperature
The advent of December brings a slight shift in average high-temperature, moving from a pleasant 68.9°F (20.5°C) in November to a refreshing 61.5°F (16.4°C). Nighttime temperatures in December average to a chilly 46.2°F (7.9°C).Humidity
In Alamo Heights, the average relative humidity in December is 69%.Rainfall
In Alamo Heights, during December, the rain falls for 11.3 days and regularly aggregates up to 1.14" (29mm) of precipitation. Throughout the year, there are 155.9 rainfall days, and 22.76" (578mm) of precipitation is accumulated.Snowfall
In Alamo Heights, snow does not fall in March through December.Daylight
December has the shortest days of the year in Alamo Heights, with an average of 10h and 18min of daylight.On the first day of December, sunrise is at 7:11 am and sunset at 5:34 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 5:46 pm CST.
Sunshine
With an average of 5.2h of sunshine, December has the least sunshine of the year in Alamo Heights.UV index
With an average maximum UV index of 3, December is the month with the lowest UV index. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: In December, a daily maximum UV index of 3 leads to the following instructions:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Alamo Heights, TX
- Average high temperature in December: 61.5°F
The warmest month (with the highest average high temperature) is August (96.6°F).
The month with the lowest average high temperature is January (61.2°F).
- Average low temperature in December: 46.2°F
The month with the highest average low temperature is August (75°F).
The coldest month (with the lowest average low temperature) is January (44.2°F).
Average pressure in December
Alamo Heights, TX
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in December
Alamo Heights, TX
- Average wind speed in December: 8mph
The windiest months (with the highest average wind speed) are February, March, April and May (8.8mph).
The calmest month (with the lowest average wind speed) is September (6.4mph).
Average humidity in December
Alamo Heights, TX
- Average humidity in December: 69%
The month with the highest relative humidity is May (73%).
The month with the lowest relative humidity is August (59%).
Average rainfall in December
Alamo Heights, TX
- Average rainfall in December: 1.14"
The wettest month (with the highest rainfall) is May (3.78").
The driest month (with the least rainfall) is February (0.94").
Average rainfall days in December
Alamo Heights, TX
- Average rainfall days in December: 11.3 days
The month with the highest number of rainy days is May (18 days).
The months with the least rainy days are January and August (9.3 days).
Average snowfall in December
Alamo Heights, TX
- Average snowfall in December: 0"
The months with the highest snowfall are January and February (0.08").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in December
Alamo Heights, TX
- Average snowfall days in December: 0.1 days
The month with the highest number of snowfall days is February (0.4 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average daylight in December /
Average sunshine in December
Alamo Heights, TX
- Average daylight in December: 10h and 18min
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 12min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 12min).
Average sunshine days in December
Alamo Heights, TX
- Average sunshine days in December: 18 days
The month with the most sunshine days is January (20 days).
The month with the least sunshine days is May (10.2 days).
Average UV index in December
Alamo Heights, 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
Alamo Heights, TX
- Average cloud cover in December: 42
The month with the most cloud cover is March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in December
Alamo Heights, 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).
