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Weather & Climate in Flatonia, TX
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Flatonia enjoys a temperate climate with an average annual temperature of 68°F (20°C). Winters average 51°F in January while summers reach 83°F in July. The area gets 300 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 37.9 inches. Air quality is rated Good with a median AQI of 42. The city sits at an elevation of 435 feet.
Temperature
51°F Jan (11°C)
83°F Jul (28°C)
| Annual Average | 68.0°F |
| 26% above US avg | |
| January Average | 51°F (11°C) |
| July Average | 83°F (28°C) |
| Sunny Days | 300 days/yr |
Geography
| Elevation | 435 ft (133 m) |
| Area | 1.6 sq mi (4.2 km²) |
| Population Density | 1,055/sq mi |
| Coordinates | 29.6897°N, 97.1052°W |
| Timezone | America/Chicago |
| County | Gonzales County County |
| Nearest Airport | Austin-Bergstrom International (AUS) 49 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 42.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 85.7 / 100 |
| Social Vulnerability | 90.2 / 100 |
| Community Resilience | 16.1 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Relatively Moderate |
| Earthquake | Very Low |
| Wildfire | Relatively Low |
| Flood | Relatively Moderate |
| Hail | Relatively Moderate |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively Moderate |
| Ice Storm | Very Low |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Moderate |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
176 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 | 132 km | 5 km |
| Jan 30, 2025 | 18 km ENE of Falls City, Texas | M4.6 | 100 km | 7 km |
| Feb 17, 2024 | 3 km SSW of Falls City, Texas | M4.5 | 122 km | 7 km |
| Feb 17, 2024 | 3 km S of Falls City, Texas | M4.3 | 121 km | 8 km |
| Sep 14, 2023 | 16 km ENE of Falls City, Texas | M4.1 | 102 km | 8 km |
| Apr 9, 1993 | 21 km NW of Pawnee, Texas | M4.1 | 139 km | 5 km |
| May 1, 2018 | 4 km SSE of Falls City, Texas | M4.0 | 120 km | 5 km |
| Feb 17, 2024 | 3 km S of Falls City, Texas | M3.9 | 121 km | 8 km |
| Apr 7, 2008 | 7 km SSW of Falls City, Texas | M3.9 | 124 km | 5 km |
| Feb 22, 2024 | 3 km E of Falls City, Texas | M3.9 | 116 km | 8 km |
| Jul 19, 2023 | 19 km E of Pleasanton, Texas | M3.8 | 140 km | 9 km |
| Feb 17, 2024 | 2 km S of Falls City, Texas | M3.7 | 120 km | 8 km |
| Feb 12, 2024 | 3 km S of Falls City, Texas | M3.7 | 121 km | 7 km |
| Jan 6, 2018 | 17 km SW of Falls City, Texas | M3.6 | 136 km | 5 km |
| Jul 20, 1991 | 8 km SSW of Falls City, Texas | M3.6 | 126 km | 10 km |
| Jun 16, 2019 | 5 km SE of Falls City, Texas | M3.6 | 119 km | 5 km |
| Feb 23, 2024 | 2 km ESE of Falls City, Texas | M3.5 | 117 km | 8 km |
| Jan 31, 2025 | 19 km ENE of Falls City, Texas | M3.5 | 99 km | 7 km |
| May 2, 2024 | 2 km E of Falls City, Texas | M3.5 | 116 km | 7 km |
| Feb 9, 2024 | 3 km S of Falls City, Texas | M3.4 | 121 km | 6 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
10 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 | 115 km |
| 2021 | Nicholas | Category 1 | 75 mph | 168 km |
| 2017 | Harvey | Category 4 | 132 mph | 112 km |
| 2008 | Ike | Category 2 | 109 mph | 196 km |
| 2007 | Humberto | Category 1 | 92 mph | 249 km |
| 2003 | Claudette | Category 1 | 92 mph | 123 km |
| 1989 | Chantal | Category 1 | 81 mph | 262 km |
| 1989 | Jerry | Category 1 | 86 mph | 211 km |
| 1986 | Bonnie | Category 1 | 86 mph | 272 km |
| 1983 | Alicia | Category 3 | 115 mph | 155 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tornado History
451 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF3. Total: 4 fatalities, 173 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Mar 10, 2000 | EF3 | 91 km | 21.0 mi | 0 |
| Dec 24, 1975 | EF3 | 95 km | 1.0 mi | 0 |
| Nov 5, 1968 | EF3 | 100 km | 14.4 mi | 0 |
| Sep 20, 1967 | EF3 | 86 km | 19.9 mi | 0 |
| Sep 20, 1967 | EF3 | 98 km | 5.0 mi | 0 |
| Sep 20, 1967 | EF3 | 86 km | 19.9 mi | 0 |
| Sep 20, 1967 | EF3 | 36 km | 2.0 mi | 0 |
| Sep 20, 1967 | EF3 | 38 km | 4.3 mi | 0 |
| Sep 20, 1967 | EF3 | 89 km | 0.1 mi | 0 |
| Mar 28, 1966 | EF3 | 80 km | 9.3 mi | 0 |
| Feb 9, 1966 | EF3 | 91 km | 2.0 mi | 0 |
| May 10, 1959 | EF3 | 88 km | 11.0 mi | 0 |
| Apr 24, 1957 | EF3 | 69 km | 14.7 mi | 0 |
| Mar 20, 1957 | EF3 | 72 km | 16.9 mi | 0 |
| Mar 20, 1957 | EF3 | 70 km | 7.2 mi | 0 |
| Apr 30, 1954 | EF3 | 88 km | 139.9 mi | 0 |
| Dec 2, 1953 | EF3 | 91 km | 3.3 mi | 0 |
| Dec 1, 1953 | EF3 | 83 km | 5.1 mi | 0 |
| Apr 28, 1953 | EF3 | 35 km | 0.5 mi | 0 |
| Jun 5, 1950 | EF3 | 87 km | 23.9 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
11 wildfires (100+ acres) recorded within 100 km. Largest: BASTROP COUNTY COMPLEX (31,838 acres, 2011).
| Year | Name | Acres Burned | Distance |
| 2011 | BASTROP COUNTY COMPLEX | 31,838 | 51 km |
| 2011 | DELHI | 4,735 | 34 km |
| 2015 | HIDDEN PINES | 3,807 | 44 km |
| 2011 | BAILEY | 3,136 | 62 km |
| 2011 | LUTHERHILL | 2,215 | 41 km |
| 2009 | REESE LANE | 1,888 | 61 km |
| 2017 | SALEM RD | 1,672 | 88 km |
| 2009 | WILDERNESS RIDGE | 1,278 | 44 km |
| 2009 | EL TORRO | 1,108 | 93 km |
| 1998 | PRAUSE PRAIRIE | 1,027 | 79 km |
| 2006 | PURGATORY | 1,004 | 96 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 51°F (11°C) | 2.7 in | Coldest |
| February | 54°F (12°C) | 2.5 in | |
| March | 61°F (16°C) | 2.4 in | |
| April | 68°F (20°C) | 3.0 in | |
| May | 74°F (24°C) | 5.2 in | Wettest |
| June | 80°F (27°C) | 4.2 in | |
| July | 83°F (28°C) | 2.0 in | Driest |
| August | 84°F (29°C) | 2.6 in | Warmest |
| September | 79°F (26°C) | 4.3 in | |
| October | 70°F (21°C) | 3.9 in | |
| November | 60°F (16°C) | 3.1 in | |
| December | 53°F (12°C) | 2.6 in |
Flatonia has a seasonal temperature swing of 33°F / from 51°F in January to 84°F in August. Total annual precipitation is 38.4 inches, with May being the wettest month (5.2") and July the driest (2.0").