Wilmington, Delaware – Drivers across Delaware should prepare for strong thunderstorms, possible flash flooding, and dangerous heat Friday as multiple weather threats converge on the state. The most severe storms are expected to hit Wilmington and surrounding areas between 2 p.m. and 10 p.m., with travel delays and power outages possible.
According to the National Weather Service, a Severe Thunderstorm Watch remains in effect for Kent, Sussex, and New Castle counties until 10 p.m. Thursday, with another round of storms developing Friday afternoon. Temperatures will reach the mid-70s Friday, but humidity will drive the heat index above 90°F in some areas. Rainfall totals may exceed a quarter inch, especially during heavier cells.
Route 13, I-95, and low-lying roads near Brandywine Creek and the Christina River may flood quickly in intense downpours. Friday evening travel should be minimized. Stay indoors if thunder roars, and avoid parking under trees or near power lines. While Friday night cools into the 60s, storms could linger through early morning Saturday.
The weekend brings temporary relief with mostly sunny skies Saturday, but more thunderstorms return Sunday afternoon. Temperatures rebound into the upper 80s by Sunday and Monday, with muggier conditions returning by midweek.
Coastal Flood Advisory remains in effect from 10 p.m. Thursday to 2 a.m. Friday. Flood-prone zones near tidal creeks and Delaware Bay could see up to 1 foot of water above ground level.
Next update: Friday morning, unless watches or warnings are extended.
Five-Day Forecast for Wilmington, DE (June 26–30)
- Thursday (Today): High 93°F – Scattered storms, heat index up to 104°F.
- Friday: High 75°F – Thunderstorms likely after 2PM. Wind gusts to 25 mph.
- Saturday: High 89°F – Slight chance of PM storms. Partly sunny, breezy.
- Sunday: High 89°F – Storms likely after 2PM. Muggy with clearing overnight.
- Monday: High 87°F – Chance of storms, otherwise partly sunny.
