A heat wave is moving in from Chicago to New York City over the next several days.

Already Chicago Executive Airport tied a record high of 93 degrees on Sunday and with humidity it felt like it was 106 degrees in spots.

Fifteen states from Arkansas to Maine are under heat advisories or warnings.

Temperatures will be in the 90s and with humidity it will feel like over 100 degrees in many areas around eastern United States.

The worst of the hot and humid weather will move into the Northeast by Wednesday when an excessive heat watch has been issued for Hartford, Connecticut, and Boston — where heat indices could be 100 to 105.

There were over 100 damaging storm reports from the Plains into the Great Lakes over the weekend, including one tornado in Indiana.

As the cold front continues to move east, more severe weather is possible Monday from Iowa to Michigan. The biggest threat will be damaging winds, hail and an isolated tornado.

Flash flooding is possible in Wisconsin and parts of Midwest.

The severe weather threat expands on Tuesday as the cold front slows down and stretches from Kansas to Michigan.

Damaging winds will be the biggest threat but some hail is possible, but we can’t rule out a few tornadoes.

Summer Snow Falling In Montana, Idaho And Wyoming

DENVER (CBS4) – An unusually cold late August storm system is bringing a chilly rain and some high altitude snow to parts of Wyoming, Montana and Idaho.

The National Weather Service says as much as 4-8 inches could fall in elevations above 9,000 feet in the mountains of Montana and Wyoming.

Some areas have been placed under a Winter Weather Advisory.

Colorado is on the extreme southern edge of this weather system and will be windy as it passes by.

Some colder air will filter into northern and northeast Colorado by Tuesday with highs dropping 20-30 degrees from Monday.