🌤️ Delmarva Weather Update — Tuesday, June 30, 2026
Heads up: Extreme Heat Warning for New Castle County begins tomorrow; Extreme Heat Watches posted for Kent, Inland Sussex, Delaware Beaches, Queen Anne's, Talbot, Cecil, Dorchester, Wicomico, Somerset, and Inland Worcester starting Wednesday. A Heat Advisory takes effect tomorrow for Cecil County.
Today's Weather Story: Enjoy this one — it's the last comfortable day before a dangerous heat wave takes over the region. Sunshine rules the peninsula with highs in the mid 80s along the coast and around 90°F inland under a strengthening upper ridge. Light south to southeast winds will keep humidity manageable and deliver a cooler sea breeze to the beaches.
Across Delmarva:
- Wilmington, DE: Sunny, high 91°F, wind SW 0–10 mph
- Dover, DE: Sunny, high 90°F, wind S 0–10 mph
- Georgetown, DE: Mostly sunny, high 89°F, wind S 0–10 mph
- Lewes, DE: Mostly sunny, high 86°F, wind S 0–15 mph
- Cambridge, MD: Sunny, high 87°F, wind S 2–12 mph
- Salisbury, MD: Sunny, high 88°F, wind SE 1–9 mph
- Ocean City, MD: Mostly sunny, high 83°F, wind SE 3–10 mph
- Chincoteague, VA: Mostly sunny, high 82°F, wind SE 5–9 mph
Active Weather Alerts:
- Extreme Heat Warning — New Castle County, in effect July 1 at 12:00 PM through July 4 at 8:00 PM EDT
- Extreme Heat Watch — Kent, Inland Sussex, Delaware Beaches, Queen Anne's, Talbot, July 2 at 12:00 PM through July 4 at 8:00 PM EDT
- Extreme Heat Watch — Dorchester, Wicomico, Somerset, Inland Worcester, July 2 at 11:00 AM through July 3 at 8:00 PM EDT
- Heat Advisory — Cecil County, July 1 at 11:00 AM through July 1 at 8:00 PM EDT
- Extreme Heat Watch — Cecil County, July 2 at 11:00 AM through July 3 at 8:00 PM EDT
Severe Weather Outlook: SPC has no categorical severe risk over Delmarva today or tomorrow. WPC has not flagged a Delmarva-specific excessive rainfall threat, though afternoon and evening thunderstorm chances return by Friday as the pattern destabilizes heading into the holiday weekend.
Why This Setup: A strong upper ridge is anchoring over the Mid-Atlantic, compressing the airmass and driving temperatures upward. By Thursday and Friday, all-time record highs could be challenged across the region.
Looking Ahead: Wednesday flips the switch — heat and humidity surge, with the worst stretch Thursday into Saturday. Thunderstorm chances return Friday and persist through the long weekend.
Bottom Line: Soak up today's sunshine and pre-cool your home — a historic heat wave starts tomorrow.
— US Weather Warriors 🌪️ #DelmarvaWeather #DEwx #MDwx #VAwx