Increasing heat and humidity will be the rule the next few days, with temperatures peaking in the 90s in most areas and the heat index approaching 100 degrees at times on Monday and Tuesday. Skies will be mostly sunny during this time, but with a return of thunderstorms potentially south and east late Tuesday. Severe weather may be possible at times. From Wednesday onward, temperatures will be somewhat lower but remain warm, with more thunderstorm chances at intervals through the remainder of the week.