The National Weather Service predicts a heatwave in Boston with near mid-90s temperatures and high humidity, followed by a cold front bringing relief by the weekend.

St. Louis NWS forecasts intermittent showers and thunderstorms throughout the week with highs around 90 degrees and chances of rain varying between 20-50%.

San Antonio will experience high summer heat with temperatures nearing 100°F, sunny skies, and occasional chances of showers and thunderstorms. Evening conditions will be mostly clear with mild winds.

Tampa's forecast includes sun and storms with highs in the mid-90s, heat index reaching 102, and a 60% chance of rain, mainly after 4pm. This pattern is expected throughout the week.

Baltimore is experiencing warm and humid weather, with temperatures expected to rise through Tuesday and potentially reaching the lower 90s with heat index values over 100 degrees. Occasional showers and thunderstorms are also forecasted.

The National Weather Service predicts a week of mixed weather for Washington D.C., with sunny days, potential showers, and thunderstorms, and highs near 88-93 degrees.

Warm and sunny weather is expected across New York City boroughs, with temperatures in the low 90s and comfortable nighttime lows, although there's a chance for showers mid-week. No hazardous weather is forecasted.

The National Weather Service forecasts showers and thunderstorms this week in central North Carolina, with a 60% chance of rain today and persistent chances throughout the week.

Philadelphia's weather forecast promises a sunny week with high temperatures around 89-91 degrees, though humidity remains high. Showers and thunderstorms are possible mid-week, with clearer skies returning by Friday.

Ohio Valley faces continued heat with chances of afternoon storms. A high-pressure system maintains warm conditions, but a trough may increase storms and wind gusts midweek.

The National Weather Service predicts intense heat with temperatures in the 80s and 90s for Cleveland, along with high humidity, limited storm potential, and possible relief from a cold front later in the week.

The NWS Memphis forecasts hot temperatures with scattered thunderstorms for the upcoming week, with highs in the mid-90s and potential evening showers.

Hawaii extends high surf advisory through Monday evening as dangerous 10- to 14-foot waves continue pounding south-facing shores. A 50-foot boat already ran aground in dangerous conditions.