Hurricanes and Tornadoes That Hit Pasadena, MD

The nearest NOAA station with 1991–2020 climate normals is Baltimore Wash International Airport, MD, 9 miles west of Pasadena at 156 feet. July is the warmest, with an average high of 89°F and low of 68°F; January is the coolest, at 43°F and 25°F. July is the wettest at 4.5 inches of precipitation on average and February the driest at 2.9 inches; the year adds up to 45.0 inches over 75 days with at least a tenth of an inch. June to November, the hurricane season months, bring 53% of the year's precipitation (24.0 of 45.0 inches); the other six months are drier. September has brought the most of the 37 tropical systems that passed within 75 miles (13); a normal September there has highs of 80°F and 4.4 inches of precipitation. Highs reach 90°F on about 34 days a year, almost all from May to September. Lows fall below freezing on about 93 nights a year. Snowfall averages 19.3 inches a year, most of it in February. That 45.0 inches is more than at 15 of the 41 Maryland stations used on this site (37%). Dundalk, 10 miles north, has its own station (Md Sci Ctr Baltimore, MD): 44.0 inches a year, 1.0 less than here, and a July average high of 90°F against 89°F.

Water temperature at the NOAA tide station Annapolis, MD, 10 miles south, averaged 85°F in July and 42°F in January over 2021–2025. It averaged 80°F or warmer from July to August. Sea level at the Annapolis tide gauge, 10 miles from Pasadena, has risen 1.52 ± 0.04 inches per decade from 1928 to 2025, NOAA's linear trend; at that pace it is 15.2 inches in a hundred years. That is faster than at 92 of the 144 U.S. gauges with a NOAA trend.

Since 1996, the National Weather Service has logged 403 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Pasadena: 296 thunderstorm wind reports, 71 flash floods, 33 floods and 3 lightning strikes. They killed 2 people and injured 23, and the NWS estimated $8.0 million in property and crop damage. The strongest thunderstorm gust on record here was 81 mph, on June 22, 2010. August has had the most flash floods, 32 of 71. Of the 239 Maryland cities on this site with a flash flood on record, 158 have had fewer than Pasadena.

Flood insurance policyholders in Pasadena's ZIP code 21122 have filed 593 claims with the National Flood Insurance Program since 1978, and were paid $11.2 million for buildings and contents, in the dollars of each year. The most came from Hurricane Isabel in 2003: 301 claims (51% of all) and $9.5 million, then Hurricane Fran in 1996 with 39 and Hurricane Floyd in 1999 with 13. 63% of the claims carry the name of a storm or flood event; the rest have no event name. Of the 150 Maryland cities on this site with 10 or more claims, 145 have fewer than Pasadena.