San Antonio, Texas, United States climate

Average temperatures, precipitation and all-time records for San Antonio, Texas, United States, with every day graded against ~46 years of local climate history (1980–2026). Its warmest month is August, averaging a high of 96°F, and its coldest is January, with an average low of 43°F.

San Antonio is a city in the U.S. state of Texas. It is the seventh-most populous city in the United States, the second-most populous city in Texas, and the second-most populous city in the Southern U.S., with a population of 1.43 million at the 2020 census. via Wikipedia

How today compares

Latest recorded day: 2026-07-24. Each reading placed on San Antonio, Texas, United States's own ±7-day seasonal distribution.

High 95°F Normal · 46th pct

Low 76°F High · 84th pct

Feels-like 103°F Very Low · 9th pct

Humidity 22.3 g/m³ Near Record · 99th pct

Wind 12 mph Above Normal · 69th pct

Gust 25 mph High · 81st pct

Precip 0.07 in Heavy · 80th pct

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San Antonio average temperatures by month

Typical daily high and low, and average precipitation, for each month in San Antonio, Texas, United States, based on 1980–2026 records. The wettest month is May (0.20 in on an average day).

Month	Avg high	Avg low	Avg precip
January	62°F	43°F	0.10 in
February	68°F	47°F	0.10 in
March	74°F	54°F	0.10 in
April	81°F	60°F	0.10 in
May	86°F	67°F	0.20 in
June	92°F	73°F	0.10 in
July	94°F	74°F	0.10 in
August	96°F	75°F	0.10 in
September	90°F	71°F	0.10 in
October	82°F	62°F	0.10 in
November	72°F	53°F	0.10 in
December	65°F	46°F	0.10 in

Jan 31°–74°

Feb 34°–80°

Mar 41°–84°

Apr 47°–88°

May 59°–93°

Jun 69°–98°

Jul 71°–100°

Aug 72°–101°

Sep 65°–96°

Oct 52°–90°

Nov 40°–82°

Dec 33°–76°

Each bar spans the 10th-percentile daily low to the 90th-percentile daily high (the range most days fall within), coloured cold → hot on a shared -10°F to 115°F scale, so the whole year's rhythm reads at a glance.

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Record extremes

Hottest day on record: 110°F on 2011-08-28
Coldest day on record: 8°F on 1989-12-23

All San Antonio weather records →

Percentiles compare each day to San Antonio, Texas, United States's own history, so grades are relative to this location: a “Near Record” day here isn't the same temperature as elsewhere. How the grades work →