Hurricanes and Tornadoes That Hit Alvin, TX

The nearest NOAA station with 1991–2020 climate normals is Alvin, TX, 3 miles south of Alvin at 28 feet. August is the warmest, with an average high of 91°F and low of 74°F; January is the coolest, at 63°F and 44°F. June is the wettest at 6.0 inches of precipitation on average and February the driest at 3.0 inches; the year adds up to 55.1 inches over 67 days with at least a tenth of an inch. June to November, the hurricane season months, bring 56% of the year's precipitation (30.8 of 55.1 inches); the other six months are drier. September has brought the most of the 58 tropical systems that passed within 75 miles (18); a normal September there has highs of 89°F and 5.4 inches of precipitation. Highs reach 90°F on about 78 days a year, almost all from April to September. Lows fall below freezing on about 10 nights a year. That 55.1 inches is more than at 294 of the 312 Texas stations used on this site (94%). Friendswood, 8 miles north, has its own station (Houston Clover Field, TX): 53.2 inches a year, 1.9 less than here, and an August average high of 94°F against 91°F.

Water temperature at the NOAA tide station Eagle Point, Galveston Bay, TX, 20 miles east, averaged 89°F in August and 56°F in January over 2021–2025. It averaged 80°F or warmer from May to September. Sea level at the Eagle Point tide gauge, 20 miles from Alvin, has risen 4.80 ± 0.27 inches per decade from 1993 to 2025, NOAA's linear trend; at that pace it is 48.0 inches in a hundred years. That is faster than at 142 of the 144 U.S. gauges with a NOAA trend.

Since 1996, the National Weather Service has logged 78 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Alvin: 49 thunderstorm wind reports, 24 flash floods and 5 lightning strikes. They killed 1 person and injured 1, and the NWS estimated $5.9 million in property and crop damage. The strongest thunderstorm gust on record here was 69 mph, on April 17, 2015. Of the 745 Texas cities on this site with a flash flood on record, 497 have had fewer than Alvin.

Flood insurance policyholders in Alvin's ZIP code 77511 have filed 3,655 claims with the National Flood Insurance Program since 1978, and were paid $104.2 million for buildings and contents, in the dollars of each year. The most came from Tropical Storm Claudette in 1979: 1,031 claims (28% of all) and $16.9 million, then Hurricane Harvey in 2017 with 886 and Flooding in 1979 with 513. 86% of the claims carry the name of a storm or flood event; the rest have no event name. Of the 433 Texas cities on this site with 10 or more claims, 414 have fewer than Alvin.