Skip to content

DC weather history for March 17

Record warmth in 1945 made for the hottest St. Patrick’s Day on record, part of a brief but notable early-spring heat spell.

On this date in 1945, the temperature soared to a calendar-record 88 degrees. “Mercury Hits 87 for Hottest St. Patrick’s Day in D.C. History,” read a headline on the front page of The Washington Post the next day. (Although The Post reported a high of 87, official National Weather Service records indicate the high was 88.) It hasn’t been warmer than that on St. Patrick’s Day in the 80 years since.

It marked the second straight day of record warmth, after a high of 87 on March 16, “coaxing the city’s first two magnolia trees into full bloom,” The Post wrote.

Here are other notables for the day:

Mar 16 Full calendar Mar 18
Jason Samenow

Jason Samenow

Chief meteorologist, journalist, and Capital Weather founder. AMS Certified Digital Meteorologist and D.C.-area native.

All articles

Sign up to join the discussion.

More in Weather History

See all