🌤️ Delmarva Weather Update — Sunday, June 28, 2026
Heads up, New Castle County: Extreme Heat Watch in effect from Wednesday through Friday, July 4 at 8 PM EDT.
Today's Weather Story: A moist easterly flow and a nearby boundary keep Delmarva under gray skies, patchy morning fog, and scattered shower and thunderstorm chances through the afternoon. Highs cluster in the upper 70s to low 80s inland, with Ocean City held to 73°F under the onshore breeze. Nothing washout-worthy, but expect a few rumbles and quick downpours to drift across the peninsula.
Across Delmarva:
- Wilmington, DE — Patchy fog, then slight chance of showers/storms; high 83°F; NE 0–5 mph
- Dover, DE — Chance of rain showers; high 81°F; E 5 mph
- Georgetown, DE — Chance of rain showers; high 80°F; E 0–5 mph
- Lewes, DE — Chance of rain showers; high 79°F; E 5–10 mph
- Cambridge, MD — Showers, then chance of thunderstorms; high 82°F; NE 5 mph
- Salisbury, MD — Slight chance of showers/storms; high 82°F; NE 2–6 mph
- Ocean City, MD — Patchy fog, then chance of showers/storms; high 73°F; NE 3–8 mph
- Chincoteague, VA — Chance of rain showers; high 77°F; E 3–7 mph
Active Weather Alerts:
- Extreme Heat Watch — New Castle County, DE — in effect Wednesday July 1 at noon through Friday July 4 at 8 PM EDT.
Severe Weather Outlook: SPC has Delmarva in a General Thunderstorms risk for Day 1, covering Wilmington, Dover, Lewes, Salisbury, Ocean City, Chincoteague, and Cape Charles — no categorical severe risk today. Any stronger cells could produce brief gusty wind or a quick downpour, but organized severe weather isn't expected. WPC does not flag a Delmarva-specific excessive rainfall threat, though localized ponding on roadways is always possible under a slow-moving storm.
Why This Setup: A stalled boundary and a nearby low keep onshore flow funneling moisture into the peninsula, while an approaching cold front nudges enough lift for scattered convection. Translation: damp air plus a weak trigger equals hit-or-miss storms, not a widespread severe day.
Looking Ahead: Monday and Tuesday look similar with scattered convection before the pattern flips midweek — heat builds fast as a strong ridge takes over, and that's what's driving the New Castle Heat Watch into the holiday weekend.
Bottom Line: Keep the umbrella handy and the beach plans flexible — then start prepping now for a serious heat wave by Wednesday.
— US Weather Warriors 🌪️ #DelmarvaWeather #DEwx #MDwx #VAwx