TAKE THE QUIZ: How well do you know San Antonio’s weather history? 🤔

Some of these answers may surprise you!

Take the quiz: How well do you know San Antonio's weather history? (Copyright 2022 by KSAT - All rights reserved.)

Blistering summers, flooding rains, tornadoes, hail, and even the occasional snowstorm — we get all kinds of weather in San Antonio! So, how well do you know San Antonio’s weather history?

Test your knowledge by taking the quiz below ⬇️ before you read the rest of this article.

WARNING: Answers to questions below! If you don’t want to cheat, don’t read the rest of this article until you’re done with the quiz!! 😉

Monthly Averages

  • 🏝️ On average, San Antonio’s hottest month is August. The average temperature in August is 85.5° with an average high of 96.0° and an average low of 74.9°.
  • 🧥 San Antonio’s coldest month on average is January. The average temperature in January is 52.2°, with an average high of 63.3° and an average low of 41.0°.
  • 🏜️ On average, San Antonio’s driest month is February, when the airport only receives an average of 1.74 inches of rainfall.
  • ☔ San Antonio’s rainiest month on average is May. During this month, it’s normal to receive at least 4.40 inches of rainfall.

Temperature Extremes

  • 🥵 San Antonio’s hottest temperature ever recorded occurred on September 5, 2000, when the official airport thermometer reached 111°. Here’s a list of the hottest temperatures ever recorded in San Antonio:
RankTemperatureDate
Hottest111°9/5/2000
2nd110°8/28/2011
3rd109°9/4/2000
4th108°6/29/2013
5th108°8/19/1986
6th107°7/11/2022
7th107°7/13/2020
8th107°8/29/2011
9th107°6/15/1998
10th107°8/20/1909
  • 🥶 San Antonio’s coldest temperature ever recorded was 0° and it occurred on January 31, 1949. At that time, we had a snow pack on the ground as well as clear skies, which is the perfect recipe for very cold conditions. It would be difficult for us to have those conditions again, but we’ll see! Here’s a list of the coldest temperatures ever recorded in San Antonio:
RankTemperatureDate
Coldest1/31/1949
2nd2/12/1899
3rd1/30/1949
4th12/23/1989
5th2/2/1951
6th2/13/1899
7th1/8/1886
8th2/15/2021
9th12/30/1983
10th10°1/12/1962

Weather Extremes

  • ❄️ San Antonio’s snowiest winter occurred during the winter of 1984 to 1985, when the Alamo City saw 15.9 inches of snowfall!
  • 🌵 The driest calendar year in San Antonio was 1917 when only 10.11 inches of rain fell. NOTE: At the time of this article, only 9.51″ of rain has fallen for 2022 so far.
  • 🌧️ The wettest calendar year in San Antonio was 1973 when 52.28 inches of rain fell in San Antonio!
  • 🌊 The rainiest event in San Antonio’s history was the October floods of 1998. In just two days, from October 17-18, 14.42 inches of rain fell in San Antonio
  • 🧊 Largest hailstone: The largest hailstone ever recorded in Texas fell just a few miles west of San Antonio in Hondo, TX. The hailstone measured 6.4 inches in diameter! And if you’re curious as to why it hails so much in San Antonio, read a little more about it here ➡️ WHY DOES IT HAIL SO OFTEN IN SAN ANTONIO?
  • 🌪️ The strongest tornado in San Antonio’s history was an F4 tornado which occurred on April 28, 1953, when two tornadoes impacted Helotes and the Castle Hills area. Unfortunately, 3 people were killed. According to the National Weather Service:
    • “Two tornadoes hit the San Antonio area. The first moved east-northeastward from the San Geronimo area to Leon Springs. Two homes were destroyed and 17 others were badly damaged in an area about 6 miles north of Helotes. Homes were unroofed near Leon Springs, as the funnel dissipated. Two people were killed and damage was estimated at $100,000. Another tornado moved eastward from northwest of the San Antonio International Airport to north of Wetmore. One woman was killed as her home was completely swept away, 3 miles northeast of the airport. Five other members of her family were injured as the house was seen to “explode and scatter”. A car was carried 200 feet. Damage in this area was estimated at $75,000.” Adjusted for inflation, $75,000 is more than $840,000 today.
  • 🎄 The strongest cold front (24 hr. temp. drop) happened in December of 1990 when the temperature dropped from 80° to 23° just before Christmas!
  • 😅 In 2009, San Antonio recorded 59 100-degree days, the most in the Alamo City’s history! 2022 came in a close second with 58 triple-digit days. Here’s a look at the top ten 100-degree day years:
RankNumber of 100° DaysYear
Most592009
2nd582022
3rd572011
4th412013
5th362020
6th361998
7th331948
8th321951
9th311980
10th292006

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About the Author:

Sarah Spivey is a San Antonio native who grew up watching KSAT. She has been a proud member of the KSAT Weather Authority Team since 2017. Sarah is a Clark High School and Texas A&M University graduate. She previously worked at KTEN News. When Sarah is not busy forecasting, she enjoys hanging out with her husband and cat, and playing music.