Knoxville faces overcast skies with potential thunderstorms and a 60% chance of precipitation. A Hazardous Weather Outlook warns of possible flash flooding, and the rest of the week is expected to have similar conditions.

Raleigh to experience sunshine and clouds with highs around 83 degrees, and light winds. The upcoming week will remain mostly sunny, with a slight chance of rain midweek.

A flood watch is in place for Jacksonville and nearby areas, with heavy rains expected to possibly lead to flooding in northeast Florida and southeast Georgia.

The Ohio Valley, including Columbus and Cincinnati, anticipates a gradual weather change with warming temperatures, increasing humidity, and potential midweek showers, as reported by the National Weather Service.

St. Louis forecast: Sunny start with highs of 83°F, light breeze. Chance of showers and thunderstorms beginning Monday afternoon. Temperature to rise towards the weekend, reaching mid-90s.

Washington D.C. is predicted to have sunny skies and rising temperatures, with highs in the mid-80s, transitioning into a week with similar conditions and a slight chance of evening showers midweek.

Indianapolis is expecting pleasant late summer weather with sunny skies and warm temperatures gradually increasing to highs near 90 degrees by week's end, with a slight chance of showers mid-week.

The weather forecast for Tampa indicates isolated showers and thunderstorms with high temperatures, and a repeating pattern of afternoon showers and thunderstorms throughout the week.

Orlando faces scorching heat with index values up to 107 degrees, alongside a chance of strong storms. The National Weather Service Melbourne predicts above-average rainfall and heat risks, cautioning residents to prepare for unpredictable weather.

Charlotte's weather forecast predicts a week of mixed conditions with chances of showers and thunderstorms, variable cloud coverage, and temperatures ranging from the low-80s to mid-80s.

Atlanta's weather forecast predicts a stormy week with varying chances of showers and thunderstorms, and temperatures ranging from the mid-60s to high 80s.

Philadelphia's weather forecast predicts mostly sunny days, with temperatures rising throughout the week and mild evenings with lows in the upper 60s.

Baltimore is expected to have dry and cool weather due to high pressure, with slightly warmer temperatures and clear skies until mid-week, when humidity and the chance of rain may increase.