Hurricanes and Tornadoes That Hit Hillsdale, NJ

The nearest NOAA station with 1991–2020 climate normals is Dobbs Ferry-Ardsley, NY, 11 miles east of Hillsdale at 200 feet. July is the warmest, with an average high of 86°F and low of 64°F; January is the coolest, at 40°F and 23°F. December is the wettest at 4.7 inches of precipitation on average and February the driest at 3.3 inches; the year adds up to 51.3 inches over 80 days with at least a tenth of an inch. June to November, the hurricane season months, bring 51% of the year's precipitation (26.4 of 51.3 inches); the other six months are drier. September has brought the most of the 45 tropical systems that passed within 75 miles (20); a normal September there has highs of 77°F and 4.6 inches of precipitation. Highs reach 90°F on about 19 days a year, almost all from May to August. Lows fall below freezing on about 109 nights a year. Snowfall averages 32.7 inches a year, most of it in February. That 51.3 inches is more than at 46 of the 51 New Jersey stations used on this site (90%). Township Of Washington, 2 miles southwest, has its own station (Teterboro Airport, NJ): 46.4 inches a year, 4.9 less than here, and a July average high of 87°F against 86°F.

Water temperature at the NOAA tide station Kings Point, NY, 20 miles southeast, averaged 74°F in August and 38°F in February over 2021–2025. No month averaged 80°F. Sea level at the Kings Point tide gauge, 20 miles from Hillsdale, has risen 1.08 ± 0.04 inches per decade from 1931 to 2025, NOAA's linear trend; at that pace it is 10.8 inches in a hundred years. That is faster than at 62 of the 144 U.S. gauges with a NOAA trend.

Since 1996, the National Weather Service has logged 738 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Hillsdale: 326 thunderstorm wind reports, 263 flash floods, 111 floods, 37 lightning strikes and 1 heavy rain event. They killed 6 people and injured 20, and the NWS estimated $57.4 million in property and crop damage. The strongest thunderstorm gust on record here was 110 mph, on October 7, 2013. July has had the most flash floods, 81 of 263. Of the 455 New Jersey cities on this site with a flash flood on record, 358 have had fewer than Hillsdale.

Flood insurance policyholders in Hillsdale's ZIP code 07642 have filed 423 claims with the National Flood Insurance Program since 1978, and were paid $6.9 million for buildings and contents, in the dollars of each year. The most came from Hurricane Irene in 2011: 76 claims (18% of all) and $2.4 million, then Hurricane Floyd in 1999 with 63 and April 2007 Nor'easter in 2007 with 54. 70% 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, 320 have fewer than Hillsdale.