Summery heat and humidity will spread over much of the central and easternUnited States during the weekend.One, if not both, days will bring high temperatures above the 90-degree mark toChicago, Detroit, Cleveland and Pittsburgh. At the hottest time of day, it willfeel more like 95 F to 100 F. A thunderstorm may interrupt the heat in theseareas as a weakening cold front approaches from the northwest.

In the East, temperatures will reach or exceedthe water from Washington, D.C., to New York and Boston.

For Kansas City, St. Louis and Cincinnati, temperatures during the weekend willreach the mid-90s daily with humidity high enough to make it seem like 100 F.

The scene will be much the same from Atlanta to Houston and elsewhere acrossthe South.

Needless to say, hot weather precautions will be advised. Light, loose-fittingclothes help, as does limiting outside exposure between late morning and midafternoon. Also, the body functions better under the stress of heat andhumidity when well-watered.

While yard work or a jog in the park will seem more of a chore, it will be afine time to hit the beach.

Story by AccuWeather.com Senior Meteorologist Jim Andrews.