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Weather & Climate in Sealy, TX
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Sealy enjoys a temperate climate with an average annual temperature of 69°F (21°C). Winters average 53°F in January while summers reach 84°F in July. The area gets 319 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Air quality is rated Good with a median AQI of 42. The city sits at an elevation of 181 feet.
Temperature
53°F Jan (12°C)
84°F Jul (29°C)
| Annual Average | 69.4°F |
| 29% above US avg | |
| January Average | 53°F (12°C) |
| July Average | 84°F (29°C) |
| Sunny Days | 319 days/yr |
Geography
| Elevation | 181 ft (55 m) |
| Area | 10.2 sq mi (26.3 km²) |
| Population Density | 592/sq mi |
| Coordinates | 29.7641°N, 96.1622°W |
| Timezone | America/Chicago |
| County | Austin County County |
| Nearest Airport | Sugar Land Regional (SGR) 32 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 42.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 53.2 / 100 |
| Social Vulnerability | 63.2 / 100 |
| Community Resilience | 39.2 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Relatively Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Very Low |
| Lightning | Relatively Low |
| Ice Storm | Relatively Low |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Low |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
21 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.2.
| Feb 7, 2021 | 8 km ESE of Smiley, Texas | M3.2 | 147 km | 6 km |
| Feb 19, 2015 | 3 km N of Hallettsville, Texas | M3.1 | 82 km | 5 km |
| May 12, 2019 | 18 km N of Yorktown, Texas | M3.1 | 144 km | 5 km |
| Feb 3, 2019 | 13 km ESE of Smiley, Texas | M3.0 | 144 km | 5 km |
| Mar 4, 2019 | 11 km SE of Cuero, Texas | M3.0 | 130 km | 5 km |
| Jan 1, 2024 | 18 km S of Gonzales, Texas | M3.0 | 133 km | 3 km |
| Aug 19, 2022 | 11 km E of Smiley, Texas | M2.9 | 142 km | 7 km |
| May 17, 2019 | 12 km ESE of Smiley, Texas | M2.9 | 143 km | 7 km |
| Oct 20, 2017 | 5 km W of Flatonia, Texas | M2.9 | 97 km | 3 km |
| Jun 16, 2022 | 17 km E of Smiley, Texas | M2.8 | 137 km | 7 km |
| Jan 4, 1995 | 1 km NW of Hallettsville, Texas | M2.7 | 84 km | 5 km |
| Jul 22, 2023 | 13 km ENE of Smiley, Texas | M2.6 | 140 km | 7 km |
| Aug 24, 2021 | 3 km NNW of Hallettsville, Texas | M2.6 | 83 km | 5 km |
| Apr 2, 2024 | 4 km SSW of Round Top, Texas | M2.5 | 60 km | 17 km |
| May 19, 2019 | 7 km ESE of Smiley, Texas | M2.5 | 148 km | 5 km |
| Apr 29, 2021 | 17 km E of Smiley, Texas | M2.5 | 137 km | 8 km |
| Jul 6, 2022 | 17 km E of Smiley, Texas | M2.5 | 136 km | 7 km |
| May 4, 2019 | 14 km ESE of Smiley, Texas | M2.5 | 142 km | 4 km |
| May 5, 2019 | 14 km ESE of Smiley, Texas | M2.5 | 142 km | 7 km |
| May 15, 2019 | 12 km ESE of Smiley, Texas | M2.5 | 143 km | 7 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
14 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 | 54 km |
| 2021 | Nicholas | Category 1 | 75 mph | 116 km |
| 2020 | Laura | Category 4 | 150 mph | 276 km |
| 2020 | Delta | Category 3 | 115 mph | 272 km |
| 2020 | Hanna | Category 1 | 81 mph | 297 km |
| 2017 | Harvey | Category 4 | 132 mph | 162 km |
| 2008 | Ike | Category 2 | 109 mph | 110 km |
| 2007 | Humberto | Category 1 | 92 mph | 164 km |
| 2005 | Rita | Category 3 | 115 mph | 215 km |
| 2003 | Claudette | Category 1 | 92 mph | 148 km |
| 1989 | Chantal | Category 1 | 81 mph | 171 km |
| 1989 | Jerry | Category 1 | 86 mph | 129 km |
| 1986 | Bonnie | Category 1 | 86 mph | 180 km |
| 1983 | Alicia | Category 3 | 115 mph | 64 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tornado History
684 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 19 fatalities, 526 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Nov 21, 1992 | EF4 | 85 km | 30.0 mi | 0 |
| Dec 28, 2024 | EF3 | 91 km | 10.3 mi | 0 |
| Jan 24, 2023 | EF3 | 90 km | 23.3 mi | 0 |
| Mar 10, 2000 | EF3 | 88 km | 21.0 mi | 0 |
| Feb 5, 1986 | EF3 | 66 km | 5.0 mi | 2 |
| Dec 13, 1977 | EF3 | 85 km | 25.1 mi | 1 |
| Mar 8, 1976 | EF3 | 83 km | 12.7 mi | 0 |
| Dec 24, 1975 | EF3 | 89 km | 1.0 mi | 0 |
| Sep 13, 1974 | EF3 | 45 km | 3.6 mi | 0 |
| Sep 8, 1969 | EF3 | 91 km | 0.8 mi | 0 |
| Dec 12, 1968 | EF3 | 94 km | 6.2 mi | 0 |
| Sep 20, 1967 | EF3 | 85 km | 0.1 mi | 0 |
| Sep 20, 1967 | EF3 | 9 km | 19.9 mi | 0 |
| Sep 20, 1967 | EF3 | 75 km | 2.0 mi | 0 |
| Sep 20, 1967 | EF3 | 9 km | 19.9 mi | 0 |
| Sep 20, 1967 | EF3 | 99 km | 4.3 mi | 0 |
| Mar 28, 1966 | EF3 | 39 km | 9.3 mi | 0 |
| Sep 22, 1965 | EF3 | 66 km | 0.8 mi | 0 |
| Apr 19, 1965 | EF3 | 38 km | 0.2 mi | 1 |
| Nov 22, 1961 | EF3 | 41 km | 2.0 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: RILEY ROAD (18,999 acres, 2011).
| Year | Name | Acres Burned | Distance |
| 2011 | RILEY ROAD | 18,999 | 61 km |
| 2019 | UNNAMED | 6,349 | 92 km |
| 2011 | DYER MILL | 5,170 | 64 km |
| 2020 | C-38/39/40 | 4,708 | 95 km |
| 2013 | UNNAMED | 4,218 | 99 km |
| 2016 | UNNAMED | 4,014 | 95 km |
| 2022 | UNNAMED | 3,972 | 96 km |
| 2010 | RX BURN C 36 39 | 3,832 | 96 km |
| 2013 | UNNAMED | 3,489 | 91 km |
| 2011 | BAILEY | 3,136 | 30 km |
| 2016 | UNNAMED | 2,832 | 98 km |
| 2021 | C-8/9 | 2,722 | 90 km |
| 2024 | SHNF COMP 39/40 RX | 2,480 | 96 km |
| 2024 | SHNF COMP 1 / 2 / 3 RX | 2,292 | 98 km |
| 2010 | COMPARTMENTS 1/4 RX | 2,252 | 91 km |
| 2011 | LUTHERHILL | 2,215 | 70 km |
| 2010 | RX BURN COMPARTMENTS 6-7-8-9 | 2,136 | 91 km |
| 2009 | REESE LANE | 1,888 | 31 km |
| 2010 | RX BURN COMPARTMENTS 18-19 | 1,851 | 98 km |
| 2010 | C 30 WMA | 1,739 | 90 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 53°F (12°C) | 3.0 in | Coldest |
| February | 54°F (12°C) | 2.8 in | |
| March | 61°F (16°C) | 2.3 in | Driest |
| April | 67°F (20°C) | 2.8 in | |
| May | 74°F (24°C) | 4.8 in | Wettest |
| June | 81°F (27°C) | 4.3 in | |
| July | 84°F (29°C) | 2.6 in | Warmest |
| August | 83°F (29°C) | 3.2 in | |
| September | 79°F (26°C) | 4.7 in | |
| October | 71°F (21°C) | 3.8 in | |
| November | 61°F (16°C) | 3.6 in | |
| December | 54°F (12°C) | 3.1 in |
Sealy has a seasonal temperature swing of 31°F / from 53°F in January to 84°F in July. Total annual precipitation is 40.9 inches, with May being the wettest month (4.8") and March the driest (2.3").