2025 Compare Climate & Weather:
Houston, TX vs San Marcos, TX

Highlights

On average, there are 232 sunny days per year in San Marcos. Houston averages 204 sunny days per year. The US average is 205 sunny days.

San Marcos, Texas gets 35.2 inches of rain, on average, per year. Houston, Texas gets 53 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

San Marcos averages 0.1 inches of snow per year. Houston averages 0 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

San Marcos, Texas
Summer High: the July high is around 94.3 degrees
Winter Low: the January low is 39.1
Rain: averages 35.2 inches of rain a year
Snow: averages 0.1 inches of snow a year

Houston, Texas
Summer High: the July high is around 93 degrees
Winter Low: the January low is 43.4
Rain: averages 53 inches of rain a year
Snow: averages 0 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for San Marcos is 7.2 (10=best), which means it is more comfortable than most places in Texas.

The annual BestPlaces Comfort Index for Houston is 6.6 (10=best), which means it is less comfortable than most places in Texas.

Today's Weather - Houston, TX

77°F

Today's Weather - San Marcos, TX

83°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Houston / San Marcos

August is the hottest month for Houston with an average high temperature of 93.6°, which ranks it as cooler than most places in Texas. In Houston, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Houston are April, October and November.

August is the hottest month for San Marcos with an average high temperature of 95.5°, which ranks it as about average compared to other places in Texas. In San Marcos, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for San Marcos are April, October and March.

January has the coldest nighttime temperatures for Houston with an average of 43.4°. This is warmer than most places in Texas.

January has the coldest nighttime temperatures for San Marcos with an average of 39.1°. This is warmer than most places in Texas.

In Houston, there are 95.9 days annually when the high temperature is over 90°, which is about average compared to other places in Texas.

In San Marcos, there are 103.9 days annually when the high temperature is over 90°, which is hotter than most places in Texas.

In Houston, there are 7.8 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Texas.

In San Marcos, there are 20.4 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Texas.

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

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

June is the wettest month in Houston with 6.2 inches of rain, and the driest month is February with 3.2 inches. The wettest season is Autumn with 29% of yearly precipitation and 21% occurs in Spring, which is the driest season. The annual rainfall of 53.0 inches in Houston means that it is one of the wettest places in Texas.


October is the wettest month in San Marcos with 4.4 inches of rain, and the driest month is August with 2.0 inches. The wettest season is Winter with 30% of yearly precipitation and 19% occurs in Spring, which is the driest season. The annual rainfall of 35.2 inches in San Marcos means that it is about average compared to other places in Texas.

June is the rainiest month in Houston with 9.3 days of rain, and April is the driest month with only 5.7 rainy days. There are 90.0 rainy days annually in Houston, which is rainier than most places in Texas. The rainiest season is Autumn when it rains 28% of the time and the driest is Summer with only a 22% chance of a rainy day.

May is the rainiest month in San Marcos with 8.1 days of rain, and August is the driest month with only 4.9 rainy days. There are 83.1 rainy days annually in San Marcos, which is rainier than most places in Texas. The rainiest season is Spring when it rains 27% of the time and the driest is Autumn with only a 21% chance of a rainy day.

There is rarely any recorded snowfall in Houston, ranking it as one of the least snowy places in Texas.

An annual snowfall of 0.1 inches in San Marcos means that it is less snowy than most places in Texas.

Any measurable snowfall is a rare occurance in Houston.

January is the snowiest month in San Marcos with 0.1 inches of snow, and no months of the year have significant snowfall.