Hurricanes and Tornadoes That Hit Billerica, MA

The nearest NOAA station with 1991–2020 climate normals is Bedford, MA, 5 miles south of Billerica at 160 feet. July is the warmest, with an average high of 84°F and low of 61°F; January is the coolest, at 36°F and 18°F. October is the wettest at 4.9 inches of precipitation on average and February the driest at 3.4 inches; the year adds up to 49.0 inches over 85 days with at least a tenth of an inch. June to November, the hurricane season months, bring 50% of the year's precipitation (24.5 of 49.0 inches). September has brought the most of the 46 tropical systems that passed within 75 miles (18); a normal September there has highs of 74°F and 3.7 inches of precipitation. Highs reach 90°F on about 13 days a year, almost all from June to August. Lows fall below freezing on about 140 nights a year. Snowfall averages 59.0 inches a year, most of it in January. That 49.0 inches is more than at 38 of the 65 Massachusetts stations used on this site (58%). North Billerica, 3 miles northwest, has its own station (Lowell, MA): 48.6 inches a year, 0.4 less than here, and a July average high of 85°F against 84°F.

Sea level at the Boston tide gauge, 17 miles from Billerica, 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 286 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Billerica: 197 thunderstorm wind reports, 51 floods, 20 lightning strikes and 18 flash floods. They killed 0 people and injured 6, and the NWS estimated $12.4 million in property and crop damage. The strongest thunderstorm gust on record here was 100 mph, on July 7, 2014. July has had the most flash floods, 10 of 18. Of the 339 Massachusetts cities on this site with a flash flood on record, 157 have had fewer than Billerica.

Flood insurance policyholders in Billerica's ZIP code 01821 have filed 284 claims with the National Flood Insurance Program since 1978, and were paid $2.4 million for buildings and contents, in the dollars of each year. The most came from Flooding in 2001: 107 claims (38% of all) and $859,000, then March 2010 Nor'easter in 2010 with 67 and Not a named storm in 1982 with 27. The year with the most claims was 2010, with 68. 71% 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, 201 have fewer than Billerica.