2025 Compare Climate & Weather:
San Marcos, TX vs Ankeny, IA

Highlights

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

Ankeny, Iowa gets 35.9 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.

Ankeny averages 33.9 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

Ankeny, Iowa
Summer High: the July high is around 85.8 degrees
Winter Low: the January low is 12.4
Rain: averages 35.9 inches of rain a year
Snow: averages 33.9 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 Ankeny is 6.9 (10=best), which means it is more comfortable than most places in Iowa.

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

79°F

Today's Weather - Ankeny, IA

53°F

Average Monthly High / Low (°F)

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

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.

July is the hottest month for Ankeny with an average high temperature of 85.8°, which ranks it as one of the hottest places in Iowa. In Ankeny, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Ankeny are September, June and May.

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

January has the coldest nighttime temperatures for Ankeny with an average of 12.4°. This is warmer than most places in Iowa.

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 Ankeny, there are 19.0 days annually when the high temperature is over 90°, which is hotter than most places in Iowa.

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 Ankeny, there are 135.6 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Iowa.

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 Ankeny, there are 13.8 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Iowa.

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 wettest month in Ankeny with 5.1 inches of rain, and the driest month is January with 1.0 inches. The wettest season is Autumn with 39% of yearly precipitation and 9% occurs in Spring, which is the driest season. The annual rainfall of 35.9 inches in Ankeny means that it is about average compared to other places in Iowa.

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.

May is the rainiest month in Ankeny with 12.4 days of rain, and January is the driest month with only 7.1 rainy days. There are 108.8 rainy days annually in Ankeny, which is one of the rainiest places in Iowa. The rainiest season is Summer when it rains 29% of the time and the driest is Spring with only a 20% 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 33.9 inches in Ankeny means that it is snowier than most places in Iowa.

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 Ankeny with 8.5 inches of snow, and 6 months of the year have significant snowfall.