Hurricanes and Tornadoes That Hit Schwenksville, PA

The nearest NOAA station with 1991–2020 climate normals is Graterford 1 E, PA, 3 miles southeast of Schwenksville at 279 feet. July is the warmest, with an average high of 86°F and low of 64°F; January is the coolest, at 40°F and 20°F. July is the wettest at 5.0 inches of precipitation on average and February the driest at 2.6 inches; the year adds up to 48.6 inches over 80 days with at least a tenth of an inch. June to November, the hurricane season months, bring 55% of the year's precipitation (26.6 of 48.6 inches); the other six months are drier. September has brought the most of the 30 tropical systems that passed within 75 miles (11); a normal September there has highs of 78°F and 4.9 inches of precipitation. Highs reach 90°F on about 21 days a year, almost all from June to September. Lows fall below freezing on about 137 nights a year. Snowfall averages 12.9 inches a year, most of it in February. That 48.6 inches is more than at 120 of the 148 Pennsylvania stations used on this site (81%). Perkiomenville, 5 miles northwest, has its own station (Pottstown Limerick Airport, PA): 45.3 inches a year, 3.3 less than here, and a July average high of 84°F against 86°F.

Since 1996, the National Weather Service has logged 402 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Schwenksville: 289 thunderstorm wind reports, 70 flash floods, 28 floods, 11 lightning strikes and 4 heavy rain events. They killed 3 people and injured 4, and the NWS estimated $23.3 million in property and crop damage. The strongest thunderstorm gust on record here was 110 mph, on May 29, 2019. August has had the most flash floods, 22 of 70. Of the 788 Pennsylvania cities on this site with a flash flood on record, 591 have had fewer than Schwenksville.

Flood insurance policyholders in Schwenksville's ZIP code 19473 have filed 193 claims with the National Flood Insurance Program since 1978, and were paid $6.1 million for buildings and contents, in the dollars of each year. The most came from Hurricane Ida in 2021: 29 claims (15% of all) and $2.9 million, then Hurricane Irene in 2011 with 23 and Hurricane Isaias in 2020 with 20. The year with the most claims was 1996, with 30. 65% 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, 465 have fewer than Schwenksville.