Hurricanes and Tornadoes That Hit Dauphin, PA

The nearest NOAA station with 1991–2020 climate normals is Harrisburg 1 NE, PA, 8 miles south of Dauphin at 420 feet. July is the warmest, with an average high of 85°F and low of 65°F; January is the coolest, at 37°F and 22°F. July is the wettest at 4.8 inches of precipitation on average and February the driest at 2.8 inches; the year adds up to 45.3 inches over 82 days with at least a tenth of an inch. June to November, the hurricane season months, bring 54% of the year's precipitation (24.4 of 45.3 inches); the other six months are drier. October has brought the most of the 22 tropical systems that passed within 75 miles (8); a normal October there has highs of 63°F and 3.8 inches of precipitation. Highs reach 90°F on about 18 days a year, almost all from June to August. Lows fall below freezing on about 111 nights a year. Snowfall averages 23.9 inches a year, most of it in February. That 45.3 inches is more than at 81 of the 148 Pennsylvania stations used on this site (55%). Halifax, 7 miles north, has its own station (Dehart Dam, PA): 50.9 inches a year, 5.6 more than here, and a July average high of 84°F against 85°F.

Since 1996, the National Weather Service has logged 221 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Dauphin: 198 thunderstorm wind reports, 12 flash floods, 10 floods and 1 lightning strike. They killed 0 people and injured 4, and the NWS estimated $1.9 million in property and crop damage. The strongest thunderstorm gust on record here was 100 mph, on June 14, 2026. September has had the most flash floods, 4 of 12. Of the 788 Pennsylvania cities on this site with a flash flood on record, 211 have had fewer than Dauphin.

Flood insurance policyholders in Dauphin's ZIP code 17018 have filed 303 claims with the National Flood Insurance Program since 1979, and were paid $4.4 million for buildings and contents, in the dollars of each year. The most came from Flooding in 1996: 70 claims (23% of all) and $639,000, then Tropical Storm Lee in 2011 with 68 and Tropical Storm Ivan in 2004 with 64. The year with the most claims was 2011, with 74. 70% 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, 502 have fewer than Dauphin.