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Weather & Climate in San Antonio, TX
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
San Antonio has a warm climate with an average annual temperature of 72°F (22°C). Winters average 58°F in January while summers reach 88°F in July. The area gets 299 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 34.6 inches. Air quality is rated Good with a median AQI of 42. The city sits at an elevation of 728 feet.
Temperature
58°F Jan (14°C)
88°F Jul (31°C)
| Annual Average | 71.9°F |
| 33% above US avg | |
| January Average | 58°F (14°C) |
| July Average | 88°F (31°C) |
| Sunny Days | 299 days/yr |
Geography
| Elevation | 728 ft (222 m) |
| Area | 466.7 sq mi (1,208.8 km²) |
| Population Density | 2,924/sq mi |
| Coordinates | 29.4628°N, 98.5246°W |
| Timezone | America/Chicago |
| County | Bexar County County |
| Nearest Airport | San Antonio International (SAT) 6 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 42.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively High |
| Risk Score | 99.4 / 100 |
| Social Vulnerability | 57.2 / 100 |
| Community Resilience | 21.7 / 100 |
Hazard Breakdown
| Tornado | Very High |
| Hurricane | Relatively Moderate |
| Earthquake | Relatively Low |
| Wildfire | Relatively Moderate |
| Flood | Very High |
| Hail | Very High |
| Strong Wind | Relatively High |
| Heat Wave | Relatively High |
| Winter Weather | Relatively High |
| Lightning | Relatively High |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Moderate |
| Cold Wave | Relatively High |
| Landslide | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
224 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.8.
| Oct 20, 2011 | 14 km SSW of Falls City, Texas | M4.8 | 79 km | 5 km |
| Jan 30, 2025 | 18 km ENE of Falls City, Texas | M4.6 | 80 km | 7 km |
| Feb 17, 2024 | 3 km SSW of Falls City, Texas | M4.5 | 75 km | 7 km |
| Feb 17, 2024 | 3 km S of Falls City, Texas | M4.3 | 75 km | 8 km |
| Sep 14, 2023 | 16 km ENE of Falls City, Texas | M4.1 | 79 km | 8 km |
| Apr 9, 1993 | 21 km NW of Pawnee, Texas | M4.1 | 82 km | 5 km |
| May 1, 2018 | 4 km SSE of Falls City, Texas | M4.0 | 77 km | 5 km |
| Feb 22, 2024 | 3 km E of Falls City, Texas | M3.9 | 75 km | 8 km |
| Apr 7, 2008 | 7 km SSW of Falls City, Texas | M3.9 | 77 km | 5 km |
| Feb 17, 2024 | 3 km S of Falls City, Texas | M3.9 | 75 km | 8 km |
| Jul 19, 2023 | 19 km E of Pleasanton, Texas | M3.8 | 60 km | 9 km |
| Feb 12, 2024 | 3 km S of Falls City, Texas | M3.7 | 75 km | 7 km |
| Feb 17, 2024 | 2 km S of Falls City, Texas | M3.7 | 75 km | 8 km |
| Jan 6, 2018 | 17 km SW of Falls City, Texas | M3.6 | 79 km | 5 km |
| Jul 20, 1991 | 8 km SSW of Falls City, Texas | M3.6 | 78 km | 10 km |
| Jun 16, 2019 | 5 km SE of Falls City, Texas | M3.6 | 78 km | 5 km |
| May 2, 2024 | 2 km E of Falls City, Texas | M3.5 | 75 km | 7 km |
| Feb 23, 2024 | 2 km ESE of Falls City, Texas | M3.5 | 75 km | 8 km |
| Jan 31, 2025 | 19 km ENE of Falls City, Texas | M3.5 | 80 km | 7 km |
| Feb 19, 2024 | 0 km ENE of Falls City, Texas | M3.4 | 73 km | 6 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Hurricane History
7 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 4.
| Year | Name | Category | Max Wind | Closest |
| 2024 | Beryl | Category 1 | 92 mph | 245 km |
| 2021 | Nicholas | Category 1 | 75 mph | 279 km |
| 2017 | Harvey | Category 4 | 132 mph | 146 km |
| 2003 | Claudette | Category 1 | 92 mph | 185 km |
| 1999 | Bret | Category 3 | 115 mph | 266 km |
| 1983 | Alicia | Category 1 | 92 mph | 294 km |
| 1980 | Allen | Category 1 | 81 mph | 234 km |
Source: NOAA IBTrACS (Category 1+, 1980-2026).
Tornado History
317 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 12 fatalities, 181 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Apr 15, 1973 | EF4 | 98 km | 23.3 mi | 5 |
| Apr 28, 1953 | EF4 | 21 km | 1.0 mi | 2 |
| Oct 12, 2001 | EF3 | 89 km | 2.5 mi | 0 |
| Apr 29, 1975 | EF3 | 77 km | 8.3 mi | 3 |
| May 6, 1969 | EF3 | 71 km | 38.9 mi | 0 |
| Sep 20, 1967 | EF3 | 44 km | 5.0 mi | 0 |
| Apr 25, 1966 | EF3 | 96 km | 0.1 mi | 0 |
| Nov 22, 1961 | EF3 | 9 km | 1.0 mi | 0 |
| Dec 1, 1953 | EF3 | 58 km | 5.1 mi | 0 |
| Apr 28, 1953 | EF3 | 10 km | 4.9 mi | 1 |
| Mar 21, 2022 | EF2 | 74 km | 7.9 mi | 0 |
| Feb 19, 2017 | EF2 | 4 km | 4.6 mi | 0 |
| Oct 30, 2015 | EF2 | 56 km | 8.3 mi | 0 |
| Oct 30, 2015 | EF2 | 52 km | 5.3 mi | 0 |
| Mar 19, 2012 | EF2 | 33 km | 5.0 mi | 0 |
| Mar 19, 2012 | EF2 | 54 km | 3.5 mi | 0 |
| Jul 21, 2007 | EF2 | 54 km | 2.0 mi | 0 |
| Apr 7, 2002 | EF2 | 73 km | 1.0 mi | 0 |
| Mar 19, 2002 | EF2 | 28 km | 1.5 mi | 0 |
| Oct 12, 2001 | EF2 | 63 km | 1.2 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950-2024, US only).
Wildfire History
7 wildfires (100+ acres) recorded within 100 km. Largest: CHRISTINE (2,946 acres, 2022).
| Year | Name | Acres Burned | Distance |
| 2022 | CHRISTINE | 2,946 | 82 km |
| 2022 | TRAINING AREA 23 | 2,696 | 27 km |
| 2022 | BUDDY | 1,521 | 97 km |
| 2022 | SMOKE RIDER | 1,233 | 84 km |
| 2006 | CVFD NUMBER 70 | 1,177 | 88 km |
| 2022 | DAS GOAT | 1,135 | 39 km |
| 2006 | PURGATORY | 1,004 | 64 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 58°F (14°C) | 1.6 in | Driest |
| February | 55°F (13°C) | 1.8 in | |
| March | 63°F (17°C) | 1.6 in | |
| April | 69°F (21°C) | 2.6 in | |
| May | 76°F (24°C) | 4.2 in | Wettest |
| June | 81°F (27°C) | 3.6 in | |
| July | 88°F (31°C) | 1.9 in | Warmest |
| August | 84°F (29°C) | 2.5 in | |
| September | 79°F (26°C) | 3.4 in | |
| October | 71°F (22°C) | 3.3 in | |
| November | 61°F (16°C) | 2.2 in | |
| December | 53°F (12°C) | 1.7 in | Coldest |
San Antonio has a seasonal temperature swing of 35°F / from 53°F in December to 88°F in July. Total annual precipitation is 30.4 inches, with May being the wettest month (4.2") and January the driest (1.6").