Heat Advisory Issued for New Castle County, Delaware
Heat Advisory Issued for New Castle County, Delaware
US · Published Sep 2, 2026
• The National Weather Service has issued a heat advisory for New Castle County, Delaware, effective from noon to 8 p.m. on September 1,
• Temperatures are expected to reach 92°F (33°C), with heat index values climbing to 100°F (38°C) due to high humidity. Following the heat advisory, showers and thunderstorms are forecast, with some storms potentially severe and capable of producing heavy rainfall. Rainfall totals are expected to reach up to a quarter of an inch, with higher amounts possible in areas affected by thunderstorms. The rest of Delaware will also experience high temperatures in the 90s, with a chance of evening storms.

Impact & Risks

The heat advisory poses risks of heat-related illnesses, particularly for vulnerable groups such as young children, older adults, and individuals with chronic medical conditions. Prolonged exposure to high heat and humidity can lead to heat cramps, heat exhaustion, or even heat stroke. The forecasted thunderstorms may bring localized heavy rainfall, which could lead to minor flooding in some areas.

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