- The high of 52 at Reagan National Airport tied the previous record of 52 from 1877.
- The high of 50 at Dulles International Airport broke the previous record of 55 from 1977.
- The high of 51 at Baltimore-Washington International Marshall Airport broke the previous record of 53 from 1977.
The high of 52 at National marked the coldest high temperature in May since May 12, 2008, when the high was also 52. You have to go back to May 1, 1963 when it was 51 for a colder high.
It is officially May 9, but it sure doesn’t feel like it. Record low temperatures (more on that above and below) were set across the region, part of a flurry of record cold and late-season snowfall observed across the eastern U.S. on Saturday. Temperatures will be a few degrees colder tonight, prompting regionwide frost and freeze advisories through Sunday morning. The good news is that by Sunday afternoon, temperatures in the mid-60s will have it feeling like a regular spring day again.
Through tonight: Gusty winds should taper off after dark, and skies will become mostly clear overnight. That sets the stage for another very cold night for May, with low temperatures west of Interstate 95 dropping to around 29 to 32 degrees. D.C. and points east will bottom out in the 32-36 degree range. Widespread frost is likely in the predawn hours except perhaps downtown and near the Potomac River and Chesapeake Bay.
View the current weather at The Washington Post.
Tomorrow (Sunday): There will be a cold and frosty start to the day, but temperatures will recover quite nicely under mostly sunny skies and a warm southwest wind. High temperatures will top out in the mid-60s. Clouds will build in overnight and some scattered showers are possible with low temperatures in the mid- to upper 40s.
Record cold by the numbers: A summary of some of the cold, hard numbers from this morning, and a quick look at the records in jeopardy for Sunday morning.
34º: New daily record low temperature set at BWI today. Tomorrow’s low temperature will probably be a few degrees colder.
15º: Temperature at about 5,000 feet, both in the mountainous terrain of West Virginia and in the air above D.C. The value for the air above D.C. also set a record for the coldest upper-air temperature at that height for this time of year.
1/4 inch: Size of the snowflakes observed during the middle of the day in Montgomery County, a first for May according to a longtime local weather observer.
With clear skies and diminishing winds, temperatures are going to be even colder tonight. Here are the record low temperatures to watch for on Sunday morning:
Reagan National: 35º set in 1947
Baltimore-Washington: 33º set in 1983
Dulles: 31º set in 1983
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