Football coaches cut back on training, utilities from Maine to Virginia cut back on power, and the homeless sought shelter in air-conditioned buildings as record high temperatures were set in 26 cities.

Grain and soybean futures posted their strongest gains in a week Monday in response to predictions that crops in the Corn Belt would bake for most of this week.In New York City, Monday's record 97 degrees caused Consolidated Edison to impose a brownout on at least 250,000 tenants, leaving them without air conditioning and no way out - elevators to their high-rise homes were shut down.

At least 10,000 other tenants suffered a blackout, scores of businesses without power had to close and two hospitals voluntarily switched to backup power.

Monday's record high temperatures for the date included 104 degrees in Des Moines, Iowa, breaking a 102-year-old mark by two degrees; 97 in Louisville, Ky., and Wilmington, Del., respectively breaking 114-year-old and 93-year-old records by a degree.

All 48 contiguous states had temperatures of 87 degrees or higher and 100-degree temperatures were registered in 22 states and the District of Columbia, the National Weather Serivce said.

In Pierre, S.D., where the nation's record high temperature was a staggering 114 degrees Monday, a big concern was for livestock. With the heat expected to continue Tuesday, the weather service's livestock safety index was predicted to reach the emergency category across most of the state through the evening.

In Minnehaha County, people who needed to find relief from the heat could call a hot-line number to get a ride to a shelter.

In New Hampshire, where air conditioners have been sold out across the state for a month, ice skating spelled relief. Concord's Recreation and Parks Department is giving residents a chance to get back into the cold Tuesday night by offering free ice skating.