Just like the calendar shows, this weekend will be a transition time from spring to summer for large portions of the country.
Saturday
Storminess will remain for a large stretch of the Northeast and Mid-Atlantic, as low pressure makes its way into New England. While Washington, D.C., and Philadelphia will see morning showers, the rain will be an all-day event in Boston and New York City.
Typical afternoon showers and thunderstorms will rumble across central and southern Florida on Saturday. Locally heavy rainfall is the primary concern from these storms, which will largely be found along and south of I-4.
A storm system careening into the Pacific Northwest will bring the chance for a few showers to the Olympic Peninsula. At the same time, the front will capture some moisture from Tropical Storm Alvin, bringing showers to southern California.
Otherwise, the last day of May will find itself flooded with plenty of sunshine from coast to coast.
The coolest temperatures will be found in the Northeast, where 50s and 60s will reign from upstate New York to New England. Much of the Great Lakes, upper Ohio Valley and Mid-Atlantic will shake free from the clouds throughout the day, propelling temperatures into the 70s. Likewise, 70s will be found along the Pacific Northwest coast. Eighties will be quite common on Saturday, with the interior Northwest, Great Basin, Rockies, Plains, and Southeast among the regions to see highs reach this range. The warmest spots in the Southwest will see 90s, with even a few 100s across the low deserts.
Sunday
As the calendar switches to June, a few changes will be on their way weather-wise. The rain that plagued the Northeast will wind down, with a few showers in New England giving way to increasing sunshine.
As is typical for June, showers and thunderstorms will make their way into south Florida. The focus will be less on Tampa and Orlando, and more on Miami, though, for Sunday.
One area to watch will be the Desert Southwest, where an early season monsoonal flow will push into parts of California and Arizona. Yuma and Tucson, Ariz., could see showers and thunderstorms, while sprinkles continue across the San Diego area.
Sunday will continue to be quite pleasant across much of the country, with sunshine expected from California and Washington all the way to the Atlantic coast.
Once again, the coolest temperatures for Sunday will be in the Northeast, where 60s will remain from upstate New York to New England. The Pacific Northwest will also witness highs in the 60s on Sunday. Seventies will make a cut through the Northwest on Sunday, even as the start to retreat from the Great Lakes, Mid-Atlantic and upper Ohio Valley. High temperatures will reach the 80s for most of the country, with areas such as the Great Basin, Northern and Central Plains and Southeast likely to see temperatures that require shorts. If you are looking for hot weather in the 90s, your best bet is the Southwest, Texas and Florida.
