Hurricanes and Tornadoes That Hit Hatfield, PA

The nearest NOAA station with 1991–2020 climate normals is Sellersville, PA, 5 miles north of Hatfield at 302 feet. July is the warmest, with an average high of 85°F and low of 63°F; January is the coolest, at 38°F and 19°F. July is the wettest at 5.3 inches of precipitation on average and February the driest at 3.1 inches; the year adds up to 51.7 inches over 86 days with at least a tenth of an inch. June to November, the hurricane season months, bring 53% of the year's precipitation (27.5 of 51.7 inches); the other six months are drier. September has brought the most of the 33 tropical systems that passed within 75 miles (13); a normal September there has highs of 77°F and 4.9 inches of precipitation. Highs reach 90°F on about 15 days a year, almost all from June to September. Lows fall below freezing on about 131 nights a year. Snowfall averages 21.7 inches a year, most of it in February. That 51.7 inches is more than at 141 of the 148 Pennsylvania stations used on this site (95%). Lansdale, 3 miles south, has its own station (Graterford 1 E, PA): 48.6 inches a year, 3.1 less than here, and a July average high of 86°F against 85°F.

Water temperature at the NOAA tide station Bridesburg, PA, 24 miles southeast, averaged 80°F in July and 38°F in February over 2021–2025. It averaged 80°F or warmer from July. Sea level at the Philadelphia tide gauge, 25 miles from Hatfield, has risen 1.24 ± 0.04 inches per decade from 1900 to 2025, NOAA's linear trend; at that pace it is 12.4 inches in a hundred years. That is faster than at 73 of the 144 U.S. gauges with a NOAA trend.

Since 1996, the National Weather Service has logged 345 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Hatfield: 263 thunderstorm wind reports, 45 flash floods, 20 floods, 15 lightning strikes and 2 heavy rain events. They killed 2 people and injured 7, and the NWS estimated $2.9 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, 12 of 45. Of the 788 Pennsylvania cities on this site with a flash flood on record, 508 have had fewer than Hatfield.

Flood insurance policyholders in Hatfield's ZIP code 19440 have filed 78 claims with the National Flood Insurance Program since 1978, and were paid $1.2 million for buildings and contents, in the dollars of each year. The most came from Hurricane Ida in 2021: 10 claims (13% of all) and $460,000. The year with the most claims was 1984, with 11. 32% 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, 340 have fewer than Hatfield.