Hurricanes and Tornadoes That Hit Sewell, NJ

The nearest NOAA station with 1991–2020 climate normals is Philadelphia International Airport, PA, 11 miles northwest of Sewell at 10 feet. July is the warmest, with an average high of 88°F and low of 70°F; January is the coolest, at 41°F and 26°F. July and September are the wettest at 4.4 inches of precipitation on average and February the driest at 2.8 inches; the year adds up to 44.2 inches over 73 days with at least a tenth of an inch. June to November, the hurricane season months, bring 53% of the year's precipitation (23.5 of 44.2 inches); the other six months are drier. September has brought the most of the 44 tropical systems that passed within 75 miles (16); a normal September there has highs of 79°F and 4.4 inches of precipitation. Highs reach 90°F on about 30 days a year, almost all from May to September. Lows fall below freezing on about 77 nights a year. Snowfall averages 23.1 inches a year, most of it in February. That 44.2 inches is more than at 7 of the 51 New Jersey stations used on this site (14%). Glassboro, 3 miles south, has its own station (Woodstown Pittsgrov 4E, NJ): 46.7 inches a year, 2.5 more than here, and a July average high of 89°F against 88°F.

Water temperature at the NOAA tide station Philadelphia, PA, 13 miles north, 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, 13 miles from Sewell, 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 483 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Sewell: 346 thunderstorm wind reports, 73 flash floods, 28 floods, 23 heavy rain events and 13 lightning strikes. They killed 2 people and injured 9, and the NWS estimated $25.4 million in property and crop damage. The strongest thunderstorm gust on record here was 85 mph, on June 23, 2015. July has had the most flash floods, 23 of 73. Of the 455 New Jersey cities on this site with a flash flood on record, 221 have had fewer than Sewell.

Flood insurance policyholders in Sewell's ZIP code 08080 have filed 17 claims with the National Flood Insurance Program since 1978, and were paid $76,000 for buildings and contents, in the dollars of each year. 41% of the claims carry the name of a storm or flood event; the rest have no event name. Of the 395 New Jersey cities on this site with 10 or more claims, 44 have fewer than Sewell.