Residents will reach for their heavy jackets as brisk, chilly air sweeps across the midwestern and northeastern United States this weekend.
This shot of cool air will precede a round of showers and thunderstorms marching eastward across the Midwest Friday and Friday night and the mid-Atlantic and Northeast on Saturday and Saturday night.
Highs this time of year are typically in the 60s F from the Upper Midwest to New England and the 70s F from the central Plains to the mid-Atlantic. On the coldest day this weekend, highs will be 15 to 20 degrees below average.
Windy conditions will accompany the chill and make it feel 5 to 10 degrees colder than the actual temperature.
Anyone going to a local park or attending a baseball game will want to bundle up.
On Friday, highs will only reach the 40s across portions of North Dakota and Minnesota. The remainder of the Upper Midwest may not get out of the 50s.
Temperatures will be low enough to challenge record lows across portions of the Midwest, including Minneapolis and also Grand Forks, North Dakota, on Friday night.
The chill will dominate the Midwest by Saturday before reaching the East Coast by Sunday.
Temperatures may fail to get out of the 50s F from Boston to New York City, Philadelphia and Pittsburgh, Pennsylvania, on Sunday.
There could be enough cold air in the mid-levels of the atmosphere to develop bands of lake-effect rain showers downwind of the Great Lakes this weekend.
It is not out of the question for some locations across the Upper Great Lakes and higher elevations of New York and New England to have a few wet snowflakes mixing in, mainly during the overnight.
"It's not unprecedented to get some snow in the lower 48 east of the Mississippi River during the month of May, but it is most certainly unusual," AccuWeather Senior Meteorologist Matt Rinde said.
"The coldest night across the Midwest and Upper Great Lakes will be on Saturday night and then the mid-Atlantic and Northeast on Sunday night," AccuWeather Meteorologist Dan Pydynowski said.
"Snowflakes are possible over the Adirondacks of New York later Sunday and Sunday night," Rinde said.
"In some areas, lows could approach the freezing mark, but there should be enough wind to keep frost from forming," Pydynowski said.
Regardless, any plants, fruits or vegetables planted outside should be covered this weekend as a precaution.
Those that have yet to plant any sensitive crops or plants may want to wait until after this weekend before doing so.
The shot of cooler air will even be felt as far south as the central Plains and Carolinas.
The brunt of the chill will only last for one or two days before milder conditions return for early next week ahead of the next storm system.