One to two inches of rain is possible Sunday and precipitation will continue into Monday, according to the National Weather Service.
On Saturday night, a cold front that's associated with an upper level low pressure system is expected to come into the Baltimore metro area and bring precipitation from the Great Lakes region, said Calvin Meadows, a meteorological technician at the NWS Sterling office.
When a surface level low pressure system that is moving up the Atlantic coast from the Carolinas reaches the Baltimore area Sunday afternoon, it will trigger widespread and heavy precipitation, he said.
The NWS is predicting localized flooding Sunday along the Interstate 95 corridor.
Sunday's high will be near 52. A north wind will be blowing between 11 and 17 mph.
Monday will be cloudy, with a 60 percent chance of rain. Rainfall will be less than a quarter inch.
Temperatures will reach into the mid- to high-50s on Tuesday and head back into the mid-60s on Wednesday.