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Maryland Heatwave: Storms and 90° Heat Ahead This Week
4 Aug
Summary
- Expect comfortable temperatures and dry conditions Tuesday before storms arrive.
- Heavy storms and high humidity are forecast from Wednesday through the weekend.
- Afternoon highs will reach around 90°, feeling like the upper 90s with humidity.

Tuesday offers a welcome break with comfortable temperatures in the mid-80s and lower humidity across Maryland. This reprieve is brief, as a warm front approaches late Tuesday night, bringing a surge in humidity and the potential for late showers.
Starting Wednesday, residents should prepare for a change as showers and storms become prevalent throughout the day, with some areas experiencing heavy rainfall and localized flooding. Strong storms with gusty winds are also possible. This pattern of heat and humidity will persist through the upcoming weekend.
By Thursday, afternoon temperatures are predicted to reach around 90°, with heat index values feeling close to 100° due to the persistent humidity. Scattered thunderstorms are expected daily, potentially bringing downpours, dangerous lightning, and street flooding.
Friday and Saturday have been flagged as potential First Alert Weather Days due to the threat of heavy, gusty thunderstorms. The combination of heat and steam will fuel these storms, with damaging winds and torrential downpours posing the greatest risks, particularly leading to localized flash flooding.