The National Weather Service has issued a Hazardous Weather Outlook for Montgomery County and much of the surrounding Washington, DC, region.
According to the forecast, scattered thunderstorms may roll into the area this evening, some with the potential to produce large hail and powerful winds.
For Independence Day, forecasters said that an upper level disturbance could bring severe thunderstorms in the afternoon and evening.
The storms aren't the only thing that could put a damper on Fourth of July celebrations. With the heat index predicted to be above 100 on Wednesday, the risk of heat-related illness increases.
Temperature-wise, the forecast isn't getting any better for the rest of the week. High temperatures are predicted through Saturday.