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Weather & Climate in Alvin, TX
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Alvin enjoys a temperate climate with an average annual temperature of 69°F (21°C). Winters average 53°F in January while summers reach 83°F in July. The area gets 314 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 55.1 inches (wetter than the 38-inch national average). Air quality is rated Good with a median AQI of 42. The city sits at an elevation of 41 feet.
Temperature
53°F Jan (12°C)
83°F Jul (28°C)
| Annual Average | 69.3°F |
| 28% above US avg | |
| January Average | 53°F (12°C) |
| July Average | 83°F (28°C) |
| Sunny Days | 314 days/yr |
Geography
| Elevation | 41 ft (12 m) |
| Area | 25.6 sq mi (66.4 km²) |
| Population Density | 1,209/sq mi |
| Coordinates | 29.4248°N, 95.2244°W |
| Timezone | America/Chicago |
| County | Brazoria County County |
| Nearest Airport | William P Hobby (HOU) 16 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 42.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 93.6 / 100 |
| Social Vulnerability | 24.0 / 100 |
| Community Resilience | 82.0 / 100 |
Hazard Breakdown
| Tornado | Relatively High |
| Hurricane | Relatively High |
| Earthquake | Very Low |
| Wildfire | Relatively Low |
| Flood | Relatively High |
| Hail | Relatively Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Moderate |
| Winter Weather | Very Low |
| Lightning | Relatively High |
| Ice Storm | Relatively High |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Moderate |
| Landslide | Very Low |
| Coastal Flood | Relatively Moderate |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Hurricane History
19 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 4.
| Year | Name | Category | Max Wind | Closest |
| 2024 | Francine | Category 2 | 92 mph | 292 km |
| 2024 | Beryl | Category 1 | 92 mph | 76 km |
| 2021 | Nicholas | Category 1 | 75 mph | 83 km |
| 2020 | Laura | Category 4 | 150 mph | 191 km |
| 2020 | Delta | Category 3 | 115 mph | 177 km |
| 2020 | Hanna | Category 1 | 92 mph | 261 km |
| 2019 | Barry | Category 1 | 75 mph | 293 km |
| 2017 | Harvey | Category 4 | 132 mph | 217 km |
| 2008 | Ike | Category 2 | 109 mph | 44 km |
| 2007 | Humberto | Category 1 | 92 mph | 66 km |
| 2005 | Rita | Category 3 | 127 mph | 147 km |
| 2003 | Claudette | Category 1 | 92 mph | 128 km |
| 2002 | Lili | Category 1 | 92 mph | 290 km |
| 1989 | Jerry | Category 1 | 86 mph | 33 km |
| 1989 | Chantal | Category 1 | 81 mph | 82 km |
| 1986 | Bonnie | Category 1 | 86 mph | 101 km |
| 1985 | Juan | Category 1 | 86 mph | 216 km |
| 1985 | Danny | Category 1 | 92 mph | 245 km |
| 1983 | Alicia | Category 3 | 115 mph | 8 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tornado History
721 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 28 fatalities, 784 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Nov 21, 1992 | EF4 | 34 km | 30.0 mi | 0 |
| Sep 12, 1961 | EF4 | 45 km | 1.0 mi | 8 |
| Dec 28, 2024 | EF3 | 81 km | 10.3 mi | 0 |
| Dec 28, 2024 | EF3 | 57 km | 67.9 mi | 0 |
| Jan 24, 2023 | EF3 | 19 km | 23.3 mi | 0 |
| Mar 30, 2002 | EF3 | 29 km | 0.7 mi | 0 |
| Jan 1, 1999 | EF3 | 98 km | 5.5 mi | 0 |
| Nov 21, 1992 | EF3 | 68 km | 32.0 mi | 0 |
| Feb 5, 1986 | EF3 | 74 km | 5.0 mi | 2 |
| Dec 13, 1977 | EF3 | 40 km | 25.1 mi | 1 |
| Mar 8, 1976 | EF3 | 21 km | 12.7 mi | 0 |
| Oct 28, 1974 | EF3 | 86 km | 9.6 mi | 1 |
| Oct 28, 1974 | EF3 | 36 km | 3.3 mi | 1 |
| Sep 13, 1974 | EF3 | 54 km | 3.6 mi | 0 |
| Sep 8, 1969 | EF3 | 31 km | 0.8 mi | 0 |
| May 27, 1969 | EF3 | 64 km | 1.5 mi | 3 |
| Apr 11, 1969 | EF3 | 81 km | 2.0 mi | 0 |
| Mar 23, 1969 | EF3 | 99 km | 0.5 mi | 0 |
| Aug 18, 1967 | EF3 | 30 km | 0.5 mi | 0 |
| Apr 18, 1966 | EF3 | 45 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: 08 UNIT 1 RX (16,981 acres, 2007).
| Year | Name | Acres Burned | Distance |
| 2007 | 08 UNIT 1 RX | 16,981 | 96 km |
| 1989 | UNNAMED | 8,539 | 92 km |
| 1994 | UNIT1ARSON | 8,287 | 98 km |
| 1993 | UNNAMED | 7,714 | 92 km |
| 2015 | WF WEST END 2015 | 6,590 | 87 km |
| 1991 | UNNAMED | 6,469 | 90 km |
| 2004 | UNIT 1 WF | 6,421 | 98 km |
| 2012 | WF FROZEN POINT | 5,738 | 71 km |
| 2000 | JACKSON DIT | 5,402 | 75 km |
| 2001 | UNIT 1 | 5,313 | 98 km |
| 2017 | TXTMR FY17 RX WHARTON | 5,175 | 30 km |
| 2010 | WHARTON | 5,084 | 29 km |
| 2022 | UNIT 1 | 4,911 | 99 km |
| 2021 | HOLDOVER | 4,742 | 93 km |
| 2015 | WF FEE TITLE 2015 | 4,672 | 93 km |
| 1998 | UNNAMED | 4,502 | 76 km |
| 2009 | AHR EAST POST IKE RX 09 | 4,500 | 79 km |
| 2005 | YELLOW RAIL PRAIRIE | 4,358 | 70 km |
| 2002 | S RES CAMPBELL | 4,352 | 77 km |
| 2008 | COW TRAP 2008 | 4,335 | 74 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 53°F (12°C) | 3.8 in | Coldest |
| February | 55°F (13°C) | 3.0 in | |
| March | 62°F (17°C) | 2.8 in | Driest |
| April | 68°F (20°C) | 2.9 in | |
| May | 75°F (24°C) | 4.5 in | |
| June | 81°F (27°C) | 5.8 in | |
| July | 83°F (28°C) | 4.9 in | |
| August | 83°F (28°C) | 4.2 in | Warmest |
| September | 79°F (26°C) | 6.4 in | Wettest |
| October | 71°F (22°C) | 3.9 in | |
| November | 62°F (17°C) | 4.3 in | |
| December | 55°F (13°C) | 3.6 in |
Alvin has a seasonal temperature swing of 29°F / from 53°F in January to 83°F in August. Total annual precipitation is 50.2 inches, with September being the wettest month (6.4") and March the driest (2.8").