Hurricanes and Tornadoes That Hit Coatesville, PA

The nearest NOAA station with 1991–2020 climate normals is Coatesville 2 W, PA, 2 miles west of Coatesville at 640 feet. July is the warmest, with an average high of 85°F and low of 65°F; January is the coolest, at 39°F and 22°F. September is the wettest at 5.2 inches of precipitation on average and February the driest at 3.3 inches; the year adds up to 52.2 inches over 81 days with at least a tenth of an inch. June to November, the hurricane season months, bring 52% of the year's precipitation (27.1 of 52.2 inches); the other six months are drier. September has brought the most of the 32 tropical systems that passed within 75 miles (12); a normal September there has highs of 77°F and 5.2 inches of precipitation. Highs reach 90°F on about 16 days a year, almost all from June to August. Lows fall below freezing on about 120 nights a year. Snowfall averages 31.9 inches a year, most of it in February. That 52.2 inches is more than at 142 of the 148 Pennsylvania stations used on this site (96%). Downingtown, 7 miles northeast, has its own station (W Chester 2 NW, PA): 51.0 inches a year, 1.2 less than here, and a July average high of 86°F against 85°F.

Water temperature at the NOAA tide station Marcus Hook, PA, 25 miles southeast, averaged 82°F in July and 39°F in January over 2021–2025. It averaged 80°F or warmer from July to August. Sea level at the Chesapeake City tide gauge, 31 miles from Coatesville, has risen 1.76 ± 0.12 inches per decade from 1972 to 2025, NOAA's linear trend; at that pace it is 17.6 inches in a hundred years. That is faster than at 111 of the 144 U.S. gauges with a NOAA trend.

Since 1996, the National Weather Service has logged 359 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Coatesville: 248 thunderstorm wind reports, 61 flash floods, 31 floods, 15 lightning strikes and 4 heavy rain events. They killed 5 people and injured 14, and the NWS estimated $2.3 million in property and crop damage. The strongest thunderstorm gust on record here was 71 mph, on May 31, 1998. July has had the most flash floods, 20 of 61. Of the 788 Pennsylvania cities on this site with a flash flood on record, 559 have had fewer than Coatesville.

Flood insurance policyholders in Coatesville's ZIP code 19320 have filed 87 claims with the National Flood Insurance Program since 1978, and were paid $1.6 million for buildings and contents, in the dollars of each year. The most came from Hurricane Ida in 2021: 16 claims (18% of all) and $849,000. 36% of the claims carry the name of a storm or flood event; the rest have no event name. Of the 553 Pennsylvania cities on this site with 10 or more claims, 353 have fewer than Coatesville.