Hurricanes and Tornadoes That Hit Montoursville, PA

The nearest NOAA station with 1991–2020 climate normals is Williamsport, PA, 2 miles southwest of Montoursville at 520 feet. July is the warmest, with an average high of 85°F and low of 63°F; January is the coolest, at 35°F and 20°F. September is the wettest at 4.8 inches of precipitation on average and February the driest at 2.3 inches; the year adds up to 43.7 inches over 80 days with at least a tenth of an inch. June to November, the hurricane season months, bring 56% of the year's precipitation (24.5 of 43.7 inches); the other six months are drier. October has brought the most of the 12 tropical systems that passed within 75 miles (5); a normal October there has highs of 63°F and 3.7 inches of precipitation. Highs reach 90°F on about 17 days a year, almost all from May to September. Lows fall below freezing on about 122 nights a year. Snowfall averages 35.8 inches a year, most of it in January. That 43.7 inches is more than at 61 of the 148 Pennsylvania stations used on this site (41%). Williamsport, 6 miles west, has its own station (Williamsport 2, PA): 42.7 inches a year, 1.0 less than here, and a July average high of 86°F against 85°F.

Since 1996, the National Weather Service has logged 215 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Montoursville: 197 thunderstorm wind reports, 9 flash floods, 8 floods and 1 lightning strike. They killed 2 people and injured 0, and the NWS estimated $1.0 million in property and crop damage. The strongest thunderstorm gust on record here was 90 mph, on June 9, 2011. July has had the most flash floods, 6 of 9. Of the 788 Pennsylvania cities on this site with a flash flood on record, 145 have had fewer than Montoursville.

Flood insurance policyholders in Montoursville's ZIP code 17754 have filed 371 claims with the National Flood Insurance Program since 1978, and were paid $8.8 million for buildings and contents, in the dollars of each year. The most came from Flooding in 1996: 99 claims (27% of all) and $1.7 million, then Tropical Storm Lee in 2011 with 99 and Tropical Storm Ivan in 2004 with 64. The year with the most claims was 2011, with 110. 71% 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, 512 have fewer than Montoursville.