We're havin' a heat wave

John Autey/The St. Paul Pioneer Press/AP

9-year-old William Williams, right, hugs his brother Xavier Robertson, 10, while waiting for the the Big Splash machine at the Como Town water park in St. Paul, Minn., July 17, 2013.

Temperatures hit 92 degrees in St. Paul Wednesday, with a heat index of 97 degrees.

Butch Comegys/The Scranton Times-Tribune/AP

3-year-old Kaylee Wolf and her neighbor Christina Ruda, 18, both from Hanover Township, Pa, cool off at the Montage Mountain Water Park in Scranton, Pa., July 17, 2013.

Swimmers beat the heat by cooling off in the wave pool at the Montage Mountain Water Park in Scranton, Pa., July 17, 2013.

Children play on a fountain at Pier A Park during a heat wave Hoboken, N.J., July 17, 2013.

Thomas Grant fans himself with his T-shirt while taking a break from gardening in the Jackie Robinson Community Garden in New York City, July 17, 2013.

A man in lower Manhattan takes a moment to wipe his face, July, 17, 2013. Temperatures climbed into the 90's again Wednesday as a heat wave stretched across the United States.

A man relaxes on a bench near Times Square in New York City, July 16, 2013.

A stifling heat wave has descended upon the region with temperatures expected to reach into the 100s.

Watch: Northeast boils over: Relief in sight?

People keep cool while swimming in the water at the Lower Falls of the Swift River in Albany, N.H., July 16, 2013.

Pam O'Neil of Dorset, Vt., takes to the waterways to beat the heat as she kayaks along Fish Creek in Saratoga Springs, N.Y., July 16, 2013.

Dogs splash in canine wading pools in Hudson River Park during a heat wave in New York, July 16, 2013.

Dressed in a wool uniform Binyah Howard, 14, with the Plymouth Fife and Drum Corps takes a drink near Independence Hall in Philadelphia, July 16, 2013.

A man sunbathes in Hudson River Park in New York, during a heat wave, July 16, 2013.

Joey Pavelack 8, of Enfield Conn., pops up before being totally immersed in the rapids of the Scantic River in Enfield, Conn., July 15, 2013.

Mary, 8, plays in the fountain in Washington Square Park in New York, July 15, 2013.

A man sunbathes in Washington Square Park in New York, July 15, 2013.

People walk across a dock toward the Abe Bashara Boathouse in Lawrence, Mass., July 16, 2013 as they return from boating on the Merrimack River on a hot summer evening.

People keep cool by swimming in the water at the Lower Falls of the Swift River in Albany, N.H., July 16, 2013.

Kids cool off in the spray of an open hydrant on a hot evening in Lawrence, Mass., July 16, 2013.