Climate in San Antonio, Texas

San Antonio, Texas is characterized by hot, humid summers and mild winters. Temperatures often reach the low to mid 90s during the summer months and stay mostly above freezing during the winter months. Spring and Fall typically bring mild temperatures with brief periods of heavier rainfall in both seasons.

San Antonio, Texas gets 33 inches of rain, on average, per year. The US average is 38 inches of rain per year.

San Antonio averages 0 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 220 sunny days per year in San Antonio. The US average is 205 sunny days.

San Antonio gets some kind of precipitation, on average, 83 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.

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Weather Highlights

Summer High: the July high is around 94 degrees
Winter Low: the January low is 41
Rain: averages 33 inches of rain a year
Snow: averages 0 inches of snow a year

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BESTPLACES COMFORT INDEX

The annual BestPlaces Comfort Index for San Antonio is 7.0 (10=best), which means it is about average compared to other places in Texas.

April, October and November are the most pleasant months in San Antonio, while August and July are the least comfortable months.

August is the hottest month for San Antonio with an average high temperature of 95.7°, which ranks it as warmer than most places in Texas. In San Antonio, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for San Antonio are April, October and March.

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In San Antonio, there are 105.8 days annually when the high temperature is over 90°, which is hotter than most places in Texas.

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January has the coldest nighttime temperatures for San Antonio with an average of 40.5°. This is warmer than most places in Texas.

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In San Antonio, there are 16.3 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Texas.

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In San Antonio, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Texas.

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Humidity in San Antonio can be uncomfortable during the summer, but comfortable for most of the year. The most uncomfortably humid months are July, June and August. The humid season runs from May-September and the most comfortable months are October-April.

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October is the wettest month in San Antonio with 4.2 inches of rain, and the driest month is January with 1.9 inches. The wettest season is Winter with 29% of yearly precipitation and 18% occurs in Spring, which is the driest season. The annual rainfall of 32.8 inches in San Antonio means that it is about average compared to other places in Texas.

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March is the rainiest month in San Antonio with 9.0 days of rain, and August is the driest month with only 4.5 rainy days. There are 82.5 rainy days annually in San Antonio, which is rainier than most places in Texas. The rainiest season is Summer when it rains 28% of the time and the driest is Autumn with only a 21% chance of a rainy day.

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An annual snowfall of 0.2 inches in San Antonio means that it is about average compared to other places in Texas. January is the snowiest month in San Antonio with 0.2 inches of snow, and no months of the year have significant snowfall.

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