R.J. Cardenas runs past a screen displaying a broadcast of Game 6 of the NBA Finals basketball series between the San Antonio Spurs and the Miami Heat, June 18, in San Antonio, Texas.

Ricky Perez unloads 300-pound blocks of ice from a brine tank to be sold at Arctic Glacier Premium Ice on July 17, 2012 in the Bronx borough of New York City.

Ice blocks slide out from a brine tank.

Ricky Perez prepares to unload 300-pound blocks of ice.

Ricky Perez displays 300-pound blocks of ice as they freeze in a brine tank.

Veronica Caines, foreground from right, 6, Kianna Roman, 4, Juliann Esola, 5, Aliyah Nguyen, 5, and Jayden Jones, 2, cool off in a wade pool under the watch of Brittany Gonzalez, background, Monday, July 16, in Philadelphia. Temperatures in Philadelphia reached the low 90s on Monday.

Joey Potts, left, 5, and his brother Jordan Kerver, 7, cool off in a wade pool, Monday, July 16, in Philadelphia. Temperatures in Philadelphia reached the low 90s on Monday.

People swim in the Brooklyn Bridge Park pop-up pool on July 16, in the Brooklyn borough of New York City. A heat advisory was issued in the city again today as high temperatures were expected in the 90s the next three days.

People relax in the sand at the Brooklyn Bridge Park pop-up pool on July 16, in the Brooklyn borough of New York City. A heat advisory was issued in the city again today as high temperatures were expected in the 90s the next three days.

People play kickball in the heat at Brooklyn Bridge Park on July 16, in the Brooklyn borough of New York City. A heat advisory was issued in the city again today as high temperatures were expected in the 90s the next three days.

A woman enjoys a water slide at Copa Copana water park at Haidari suburb near Athens July 11, 2012. Temperatures in many cities throughout the country reached 104 degrees Fahrenheit and is expected to stay at these levels for the next few days, according to the weather forecast service.

Tourists drive their rented electric scooters in front of the Zappeion convention hall in Athens on Wednesday on July 11.

People carry inflatable tubes as they make their way to water slides at Copa Copana water park at Haidari suburb near Athens on July 11.

De-Ashia Buchanan, 7, of Washington D.C., enjoys an inflated pool during the seventh annual block party on Newton Street, during record heat with temperatures in the triple digits, July 7.

Patrick Kirwin holds his daughter Nandini beneath a water mister at the National Zoo as temperatures surpass the 95 degree Fahrenheit (35 degrees Celcius) mark for the tenth straight day in Washington D.C., July 7. The massive heat wave, which has broken thousands of temperature records in the mid-Atlantic states, is expected to crest today with temperatures in DC reaching 105 degrees Fahrenheit.

Aney Rodriguez (top), her sister Nena Rodriguez and friend Mariely Rodriguez, not related, all of Gaithersburg, Md., cool off under the fountains at Georgetown Waterfront Park, in Washington, on June 20. Temperatures across the Northeast are expected to approach triple digits.

William Smalls plays pool and George Williams wipes his head to keep cool at the Kennedy Senior Center in Harlem, N.Y. on June 20. Set up by the Office of Emergency Management in New York, the center serves as one of many air-conditioned cooling centers located throughout the city to help New Yorkers beat the heat as temperatures soar on the first day of summer.

A kayaker make his way along the Mystic River as a sport watercraft approaches in Medford, Mass. on June 20. Temperatures reached 95 degrees in the greater Boston area along with high humidity on this summer solstice.

Steffanie Roberts gets kisses from her dogs Pink and Bear at her home on June 20, in Philadelphia. Temperatures climbed toward the high 90s along the Eastern Seaboard as an unusually early hot spell heralded the official start of summer.

Four-year-old Solaris Arias, of Providence, R.I. jumps through water spraying from an open fire hydrant in Providence on June 20. Much of the state remained under a heat advisory Tuesday afternoon because of the steamy air mass that has moved into the region resulting in temperatures in the 90s.

Manny Valdez, 16 from Arizona, leaps into a sprinkler in Central Park while Marley Henson, 16, also from Arizona, looks on in New York City, June 20, 2012. Valdez and Henson were part of a group of Rio Rico, Arizona students returning from an exchange program in Germany. New Yorkers tried to find ways to cope with the heat as temperatures soared on the first day of summer.

A boy dives in to the step-well at the Nizamuddin Dargah on June 1, in New Delhi, India. A Heat wave is continuing across the Northern India capital and expects to remain above 104 degrees Fahrenheit all week.

Boys swim in the step-well at the Nizamuddin Dargah on June 1, in New Delhi, India.

A boy swims in the step well at the Nizamuddin Dargah on June 1, in New Delhi, India.

Spectators gather by the water near the Congress Street bridge in downtown Austin, Texas, on Tuesday, July 27, to watch the bats make their nightly flight for food. The largest urban bat colony in the world lives below a bridge in Austin. The drought has killed off crops in Texas, and that in turn has killed off those delicious pests the Mexican free-tailed bats consider dinner.

Each night the bats stream from under a bridge by the hundreds of thousands in a black cloud so large that it shows up on local weather radar.

One of some 1.5 million bats emerges from below the Congress Street Bridge near downtown Austin on Wednesday.

A re-enactor portraying a Confederate soldier, center, drinks water from a flask to stay cool during the heat, before the reenactment of the First Battle of Manassas (Bull Run) in Manassas, Va., July 23. The reenactment, with over 8,000 re-enactors, is part of the 150th Anniversary Commemoration of the first major land battle in the American Civil War, which took place in Manassas, July 21, 1861. The original battle happened when about 35,000 Union troops marched from Washington and clashed with a Confederate force of 20,000, which resulted in a Confederate victory. Re-enactors had to endure a brutal heat wave with some wearing wool uniforms, as temperatures were expected to reach 102 Fahrenheit.