Hurricanes and Tornadoes That Hit Hopewell, NJ

The nearest NOAA station with 1991–2020 climate normals is Wertsville 4 NE, NJ, 5 miles north of Hopewell at 283 feet. July is the warmest, with an average high of 85°F and low of 64°F; January is the coolest, at 38°F and 22°F. July is the wettest at 5.5 inches of precipitation on average and February the driest at 3.0 inches; the year adds up to 51.1 inches over 87 days with at least a tenth of an inch. June to November, the hurricane season months, bring 53% of the year's precipitation (26.9 of 51.1 inches); the other six months are drier. September has brought the most of the 42 tropical systems that passed within 75 miles (15); a normal September there has highs of 77°F and 4.5 inches of precipitation. Highs reach 90°F on about 17 days a year, almost all from June to September. Lows fall below freezing on about 118 nights a year. Snowfall averages 23.9 inches a year, most of it in February. That 51.1 inches is more than at 45 of the 51 New Jersey stations used on this site (88%). Pennington, 4 miles south, has its own station (Trenton State College, NJ): 47.3 inches a year, 3.8 less than here, and a July average high of 87°F against 85°F.

Water temperature at the NOAA tide station Newbold, PA, 17 miles south, averaged 80°F in July and 37°F in January over 2021–2025. It averaged 80°F or warmer from July. Sea level at the Philadelphia tide gauge, 37 miles from Hopewell, 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 445 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Hopewell: 293 thunderstorm wind reports, 64 floods, 52 flash floods, 19 heavy rain events and 17 lightning strikes. They killed 11 people and injured 13, and the NWS estimated $138.7 million in property and crop damage. The strongest thunderstorm gust on record here was 79 mph, on October 4, 2000. August has had the most flash floods, 19 of 52. Of the 455 New Jersey cities on this site with a flash flood on record, 187 have had fewer than Hopewell.

Flood insurance policyholders in Hopewell's ZIP code 08525 have filed 14 claims with the National Flood Insurance Program since 2009, and were paid $431,000 for buildings and contents, in the dollars of each year. The year with the most claims was 2021, with 11. 86% 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, 24 have fewer than Hopewell.