Hurricanes and Tornadoes That Hit Westwood, MA

The nearest NOAA station with 1991–2020 climate normals is Norwood Mem Airport, MA, 2 miles southeast of Westwood at 50 feet. July is the warmest, with an average high of 86°F and low of 63°F; January is the coolest, at 40°F and 21°F. October is the wettest at 4.5 inches of precipitation on average and February the driest at 2.8 inches; the year adds up to 43.8 inches over 78 days with at least a tenth of an inch. June to November, the hurricane season months, bring 51% of the year's precipitation (22.5 of 43.8 inches); the other six months are drier. September has brought the most of the 48 tropical systems that passed within 75 miles (19); a normal September there has highs of 77°F and 3.8 inches of precipitation. Highs reach 90°F on about 16 days a year, almost all from May to September. Lows fall below freezing on about 139 nights a year. That 43.8 inches is more than at 9 of the 65 Massachusetts stations used on this site (14%). Dedham, 3 miles northeast, has its own station (Blue Hill Coop, MA): 53.9 inches a year, 10.1 more than here, and a July average high of 82°F against 86°F.

Sea level at the Boston tide gauge, 13 miles from Westwood, has risen 1.17 ± 0.03 inches per decade from 1921 to 2025, NOAA's linear trend; at that pace it is 11.7 inches in a hundred years. That is faster than at 68 of the 144 U.S. gauges with a NOAA trend.

Since 1996, the National Weather Service has logged 370 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Westwood: 223 thunderstorm wind reports, 80 floods, 43 flash floods and 24 lightning strikes. They killed 0 people and injured 22, and the NWS estimated $51.1 million in property and crop damage. The strongest thunderstorm gust on record here was 75 mph, on July 7, 2021. July has had the most flash floods, 23 of 43. Of the 339 Massachusetts cities on this site with a flash flood on record, 294 have had fewer than Westwood.

Flood insurance policyholders in Westwood's ZIP code 02090 have filed 42 claims with the National Flood Insurance Program since 1978, and were paid $187,000 for buildings and contents, in the dollars of each year. The most came from Flooding in 2001: 19 claims (45% of all) and $70,000. 67% of the claims carry the name of a storm or flood event; the rest have no event name. Of the 229 Massachusetts cities on this site with 10 or more claims, 119 have fewer than Westwood.