Wilmington, Del. – Scorching heat continues to grip northern Delaware as dangerously high temperatures push heat index values up to 107° through Wednesday.
According to the National Weather Service in Mount Holly, an Extreme Heat Warning remains in effect for New Castle County until 8 p.m. Wednesday, with Tuesday marking the peak of the heatwave. Actual highs hit 100°F Tuesday, and overnight relief will be minimal with lows staying around 79°. Residents are urged to stay hydrated, remain in air-conditioned spaces, and avoid direct sun.
Wilmington, Newark, and areas along I-95 and I-495 are at elevated risk for heat-related illness. The oppressive humidity and limited overnight cooling make this stretch especially dangerous for seniors, children, and those without AC. Public health officials urge residents to check on neighbors and call 211 for cooling center info.
Wednesday brings more heat, though slightly milder, with highs reaching 97°F. Thunderstorms may develop after 2 p.m., potentially offering brief relief but also posing new risks like lightning and heavy downpours.
Looking ahead, Thursday offers the best break with highs near 93° and increased cloud cover. Storm chances remain high into the weekend.
🌡️ Wilmington 5-Day Forecast (June 24–June 29):
- Tuesday: High 100°, Heat Index up to 107°, Sunny and dangerously hot
- Wednesday: High 97°, PM T-storms possible (30%), Extreme Heat Warning until 8 p.m.
- Thursday: High 93°, Showers and storms likely (60%)
- Friday: High 83°, Showers possible (40%), cooler trend begins
- Saturday: High 87°, Afternoon storms (40%), humid
- Sunday: High 91°, Partly cloudy, slight storm risk (30%)
