Hurricanes and Tornadoes That Hit Florham Park, NJ

The nearest NOAA station with 1991–2020 climate normals is Canoe Brook, NJ, 3 miles southeast of Florham Park at 180 feet. July is the warmest, with an average high of 86°F and low of 66°F; January is the coolest, at 40°F and 22°F. August is the wettest at 4.9 inches of precipitation on average and February the driest at 3.0 inches; the year adds up to 50.4 inches over 80 days with at least a tenth of an inch. June to November, the hurricane season months, bring 54% of the year's precipitation (27.2 of 50.4 inches); the other six months are drier. September has brought the most of the 44 tropical systems that passed within 75 miles (18); a normal September there has highs of 78°F and 4.6 inches of precipitation. Highs reach 90°F on about 29 days a year, almost all from May to September. Lows fall below freezing on about 117 nights a year. Snowfall averages 24.0 inches a year, most of it in February. That 50.4 inches is more than at 35 of the 51 New Jersey stations used on this site (69%). East Hanover, 3 miles northeast, has its own station (Boonton 1 SE, NJ): 49.3 inches a year, 1.1 less than here, and a July average high of 85°F against 86°F.

Water temperature at the NOAA tide station The Battery, NY, 20 miles east, averaged 74°F in August and 39°F in February over 2021–2025. No month averaged 80°F. Sea level at the Bergen Point tide gauge, 16 miles from Florham Park, has risen 1.86 ± 0.13 inches per decade from 1981 to 2024, NOAA's linear trend; at that pace it is 18.6 inches in a hundred years. That is faster than at 114 of the 144 U.S. gauges with a NOAA trend.

Since 1996, the National Weather Service has logged 550 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Florham Park: 317 thunderstorm wind reports, 137 flash floods, 60 floods, 26 lightning strikes and 10 heavy rain events. They killed 9 people and injured 18, and the NWS estimated $36.8 million in property and crop damage. The strongest thunderstorm gust on record here was 92 mph, on July 1, 2013. August has had the most flash floods, 56 of 137. Of the 455 New Jersey cities on this site with a flash flood on record, 287 have had fewer than Florham Park.

Flood insurance policyholders in Florham Park's ZIP code 07932 have filed 10 claims with the National Flood Insurance Program since 1979, and were paid $7,677 for buildings and contents, in the dollars of each year. 50% 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, 0 have fewer than Florham Park.