2025 Compare Climate & Weather:
San Marcos, TX vs Tucson, AZ

Highlights

On average, there are 286 sunny days per year in Tucson. San Marcos averages 232 sunny days per year. The US average is 205 sunny days.

Tucson, Arizona gets 12.3 inches of rain, on average, per year. San Marcos, Texas gets 35.2 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Tucson averages 0.4 inches of snow per year. San Marcos averages 0.1 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Tucson, Arizona
Summer High: the July high is around 100.2 degrees
Winter Low: the January low is 38.7
Rain: averages 12.3 inches of rain a year
Snow: averages 0.4 inches of snow a year

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

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Tucson is 7.5 (10=best), which means it is about average compared to other places in Arizona.

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

Today's Weather - San Marcos, TX

91°F

Today's Weather - Tucson, AZ

98°F

Average Monthly High / Low (°F)

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

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.

June is the hottest month for Tucson with an average high temperature of 100.5°, which ranks it as warmer than most places in Arizona. In Tucson, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Tucson are March, November and April.

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

December has the coldest nighttime temperatures for Tucson with an average of 38.0°. This is warmer than most places in Arizona.

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 Tucson, there are 149.2 days annually when the high temperature is over 90°, which is hotter than most places in Arizona.

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 Tucson, there are 17.0 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Arizona.

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.

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

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.


August is the wettest month in Tucson with 2.4 inches of rain, and the driest month is May with 0.2 inches. The wettest season is Autumn with 40% of yearly precipitation and 11% occurs in Summer, which is the driest season. The annual rainfall of 12.3 inches in Tucson means that it is about average compared to other places in Arizona.

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.

August is the rainiest month in Tucson with 9.5 days of rain, and June is the driest month with only 1.4 rainy days. There are 51.5 rainy days annually in Tucson, which is about average compared to other places in Arizona. The rainiest season is Autumn when it rains 38% of the time and the driest is Summer with only a 15% chance of a rainy day.

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

An annual snowfall of 0.4 inches in Tucson means that it is about average compared to other places in Arizona.

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

January is the snowiest month in Tucson with 0.2 inches of snow, and no months of the year have significant snowfall.