Some parts of Maryland could drop into the 40s for the first time since May overnight, with a taste of autumn forecast across the eastern United States on Sunday.
Hagerstown is forecast to hit 48 degrees, coldest there since a low of 44 degrees May 23, according to the National Weather Service.
In the Baltimore region, it's not expected to get as cold, but will still likely be the coolest in months. Baltimore-Washington International Thurgood Marshall Airport is forecast to drop to around 53 degrees, coolest since a low of 47 degrees May 24.
The Inner Harbor could hit 58 degrees, coldest since June 5, with a low of 57 degrees.
Temperatures are forecast to be about 10 degrees below normal across the eastern U.S. after a strong cold front passed through Saturday. Highs are forecast in the lower 70s, coldest for Baltimore since a spell in early June that didn't break out of the 60s.
Mid-September usually marks the switch from summer to fall weather, with average highs dropping into the 70s and normal lows sliding into the 50s.
The taste of fall weather will be brief, however, with highs forecast to rise back into the mid-80s by the middle of the week.