Wilmington, Delaware – St. Patrick’s Day week across Delaware could bring a late reminder that winter isn’t finished yet as colder air pushing south from Canada increases the chance for snow just days before the first day of spring.
According to the NOAA Climate Prediction Center’s 8–14 day outlook, the period from March 15 through March 21 favors above-normal precipitation across the Mid-Atlantic and Northeast, while temperatures trend below seasonal averages across much of the eastern United States. The pattern develops as a broad cold boundary stretches from Maine across the Great Lakes and south toward Georgia and northern Florida, funneling colder Canadian air down the East Coast.
That setup places Wilmington, Dover, Newark, and Rehoboth Beach in a corridor where incoming storm systems could combine with colder air, raising the potential for late-season snow or rain transitioning to snow during St. Patrick’s Day week.
Drivers along major routes including Interstate 95, Route 1, and U.S. Route 13 should monitor conditions if storms begin organizing along the East Coast. Even modest snowfall during mid-March can create slick bridges and reduced visibility during early morning commutes.
The timing stands out as daylight saving time begins this weekend, yet winterlike conditions may linger across the Mid-Atlantic even as the first day of spring arrives later that week.
Forecasters are expected to refine storm timing and temperature trends over the coming days, and additional advisories could be issued if coastal systems align with the colder air mass across the region.
