Weather & Climate in Somerset, TX
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Somerset enjoys a temperate climate with an average annual temperature of 70°F (21°C). Winters average 53°F in January while summers reach 85°F in July. Annual precipitation totals 29.7 inches (drier than the 38-inch national average). Air quality is rated Moderate with a median AQI of 52. 48% of days have good air quality. The city sits at an elevation of 653 feet.
Temperature
53°F Jan (11°C)
85°F Jul (29°C)
| Annual Average | 70.0°F |
| 30% above US avg | |
| January Average | 53°F (11°C) |
| July Average | 85°F (29°C) |
Geography
| Elevation | 653 ft (199 m) |
| Area | 2.0 sq mi (5.2 km²) |
| Population Density | 1,024/sq mi |
| Coordinates | 29.2286°N, 98.6569°W |
| Timezone | America/Chicago |
| County | Bexar County County |
| Nearest Airport | San Antonio International (SAT) 24 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 52.0 |
| Rating | Moderate |
| Good Days % | 47.5% |
| Unhealthy Days | 22 |
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
222 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 | 69 km | 5 km |
| Jan 30, 2025 | 18 km ENE of Falls City, Texas | M4.6 | 81 km | 7 km |
| Feb 17, 2024 | 3 km SSW of Falls City, Texas | M4.5 | 69 km | 7 km |
| Feb 17, 2024 | 3 km S of Falls City, Texas | M4.3 | 69 km | 8 km |
| Sep 14, 2023 | 16 km ENE of Falls City, Texas | M4.1 | 80 km | 8 km |
| Apr 9, 1993 | 21 km NW of Pawnee, Texas | M4.1 | 70 km | 5 km |
| May 1, 2018 | 4 km SSE of Falls City, Texas | M4.0 | 71 km | 5 km |
| Feb 22, 2024 | 3 km E of Falls City, Texas | M3.9 | 71 km | 8 km |
| Apr 7, 2008 | 7 km SSW of Falls City, Texas | M3.9 | 70 km | 5 km |
| Feb 17, 2024 | 3 km S of Falls City, Texas | M3.9 | 69 km | 8 km |
| Jul 19, 2023 | 19 km E of Pleasanton, Texas | M3.8 | 47 km | 9 km |
| Feb 12, 2024 | 3 km S of Falls City, Texas | M3.7 | 69 km | 7 km |
| Feb 17, 2024 | 2 km S of Falls City, Texas | M3.7 | 69 km | 8 km |
| Jan 6, 2018 | 17 km SW of Falls City, Texas | M3.6 | 67 km | 5 km |
| Jul 20, 1991 | 8 km SSW of Falls City, Texas | M3.6 | 70 km | 10 km |
| Jun 16, 2019 | 5 km SE of Falls City, Texas | M3.6 | 73 km | 5 km |
| May 2, 2024 | 2 km E of Falls City, Texas | M3.5 | 71 km | 7 km |
| Feb 23, 2024 | 2 km ESE of Falls City, Texas | M3.5 | 71 km | 8 km |
| Jan 31, 2025 | 19 km ENE of Falls City, Texas | M3.5 | 82 km | 7 km |
| Feb 19, 2024 | 0 km ENE of Falls City, Texas | M3.4 | 69 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 | 258 km |
| 2021 | Nicholas | Category 1 | 75 mph | 276 km |
| 2020 | Hanna | Category 1 | 92 mph | 299 km |
| 2017 | Harvey | Category 4 | 132 mph | 145 km |
| 2003 | Claudette | Category 1 | 92 mph | 185 km |
| 1999 | Bret | Category 4 | 138 mph | 243 km |
| 1980 | Allen | Category 2 | 98 mph | 206 km |
Source: NOAA IBTrACS (Category 1+, 1980-2026).
Tornado History
282 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 12 fatalities, 151 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Apr 15, 1973 | EF4 | 70 km | 23.3 mi | 5 |
| Apr 28, 1953 | EF4 | 38 km | 1.0 mi | 2 |
| Apr 29, 1975 | EF3 | 54 km | 8.3 mi | 3 |
| May 6, 1969 | EF3 | 97 km | 38.9 mi | 0 |
| Sep 20, 1967 | EF3 | 70 km | 5.0 mi | 0 |
| Apr 25, 1966 | EF3 | 89 km | 0.1 mi | 0 |
| Nov 22, 1961 | EF3 | 21 km | 1.0 mi | 0 |
| Dec 1, 1953 | EF3 | 77 km | 5.1 mi | 0 |
| Apr 28, 1953 | EF3 | 38 km | 4.9 mi | 1 |
| Mar 21, 2022 | EF2 | 96 km | 7.9 mi | 0 |
| Feb 19, 2017 | EF2 | 33 km | 4.6 mi | 0 |
| Oct 30, 2015 | EF2 | 50 km | 5.3 mi | 0 |
| Oct 30, 2015 | EF2 | 79 km | 8.3 mi | 0 |
| Mar 19, 2012 | EF2 | 10 km | 5.0 mi | 0 |
| Mar 19, 2012 | EF2 | 29 km | 3.5 mi | 0 |
| Jul 21, 2007 | EF2 | 71 km | 2.0 mi | 0 |
| Apr 7, 2002 | EF2 | 51 km | 1.0 mi | 0 |
| Mar 19, 2002 | EF2 | 3 km | 1.5 mi | 0 |
| Oct 12, 2001 | EF2 | 52 km | 1.2 mi | 0 |
| Sep 15, 1996 | EF2 | 91 km | 4.0 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950-2024, US only).
Wildfire History
6 wildfires (100+ acres) recorded within 100 km. Largest: LOS ANGELES (6,287 acres, 2022).
| Year | Name | Acres Burned | Distance |
| 2022 | LOS ANGELES | 6,287 | 88 km |
| 2022 | CHRISTINE | 2,946 | 58 km |
| 2022 | TRAINING AREA 23 | 2,696 | 53 km |
| 2006 | CVFD NUMBER 70 | 1,177 | 84 km |
| 2022 | DAS GOAT | 1,135 | 41 km |
| 2006 | PURGATORY | 1,004 | 92 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 53°F (11°C) | 1.8 in | Coldest |
| February | 57°F (14°C) | 1.6 in | Driest |
| March | 64°F (18°C) | 2.4 in | |
| April | 70°F (21°C) | 2.3 in | |
| May | 78°F (25°C) | 3.9 in | Wettest |
| June | 82°F (28°C) | 3.2 in | |
| July | 85°F (29°C) | 1.8 in | |
| August | 86°F (30°C) | 2.5 in | Warmest |
| September | 81°F (27°C) | 3.2 in | |
| October | 72°F (22°C) | 3.0 in | |
| November | 60°F (16°C) | 2.0 in | |
| December | 53°F (12°C) | 2.1 in |
Somerset has a seasonal temperature swing of 33°F / from 53°F in January to 86°F in August. Total annual precipitation is 29.7 inches, with May being the wettest month (3.9") and February the driest (1.6").