Hurricanes and Tornadoes That Hit Rosharon, TX

The nearest NOAA station with 1991–2020 climate normals is Thompsons 3 WSW, TX, 11 miles west of Rosharon at 70 feet. August is the warmest, with an average high of 93°F and low of 74°F; January is the coolest, at 63°F and 43°F. October is the wettest at 5.2 inches of precipitation on average and February the driest at 3.0 inches; the year adds up to 50.0 inches over 65 days with at least a tenth of an inch. June to November, the hurricane season months, bring 54% of the year's precipitation (27.1 of 50.0 inches); the other six months are drier. September has brought the most of the 57 tropical systems that passed within 75 miles (19); a normal September there has highs of 89°F and 4.9 inches of precipitation. Highs reach 90°F on about 122 days a year, almost all from April to October. Lows fall below freezing on about 8 nights a year. That 50.0 inches is more than at 270 of the 312 Texas stations used on this site (87%). Manvel, 7 miles northeast, has its own station (Houston Clover Field, TX): 53.2 inches a year, 3.2 more than here, and an August average high of 94°F against 93°F.

Water temperature at the NOAA tide station Manchester, TX, 23 miles northeast, averaged 89°F in August and 60°F in February over 2021–2025. It averaged 80°F or warmer from June to October. Sea level at the Eagle Point tide gauge, 33 miles from Rosharon, 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 43 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Rosharon: 30 thunderstorm wind reports, 6 flash floods, 6 lightning strikes and 1 heavy rain event. They killed 0 people and injured 3, and the NWS estimated $673,000 in property and crop damage. The strongest thunderstorm gust on record here was 72 mph, on April 17, 2015. August has had the most flash floods, 3 of 6. Of the 745 Texas cities on this site with a flash flood on record, 91 have had fewer than Rosharon.

Flood insurance policyholders in Rosharon's ZIP code 77583 have filed 621 claims with the National Flood Insurance Program since 1979, and were paid $26.2 million for buildings and contents, in the dollars of each year. The most came from Hurricane Harvey in 2017: 275 claims (44% of all) and $17.9 million, then Early summer severe storms in 2016 with 69 and Flooding in 1994 with 45. 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, 345 have fewer than Rosharon.