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Extreme Heat Warning Issued for Portions of DC, Maryland, and Virginia

July 3, 2026 · wweather1 editorial · 2 min read

The NWS Baltimore MD/Washington DC office has issued an Extreme Heat Warning, effective from July 2 at 1:32 PM EDT until July 4 at 8:00 PM EDT. Dangerously hot conditions, with heat index values between 110 to 113, are expected.

The National Weather Service (NWS) Baltimore MD/Washington DC has issued an Extreme Heat Warning. This warning, issued on July 2 at 1:32 PM EDT, is scheduled to remain in effect until July 4 at 8:00 PM EDT.

The warning covers portions of the District of Columbia, central, north central, northeast, northern, and southern Maryland, and central, northern, and northwest Virginia. Specifically included areas are Frederick, Carroll, Northern Baltimore, Cecil, Southern Baltimore, Prince Georges, Anne Arundel, Charles, St. Marys, Calvert, Northwest Montgomery, Central and Southeast Montgomery, Northwest Howard, Central and Southeast Howard, Northwest Harford, Southeast Harford, and Albemarle.

Dangerously hot conditions are anticipated each afternoon, with heat index values projected to range from 110 to 113. The warning outlines specific periods of extreme heat: the first Extreme Heat Warning was in effect until 8 PM EDT this evening. A second Extreme Heat Warning is scheduled from 10 AM to 8 PM EDT Friday. A third Extreme Heat Warning is slated for 10 AM to 8 PM EDT Saturday.

Officials have noted that heat related illnesses are expected to increase significantly during these events due to the extreme heat and high humidity.

Why it is dangerous and what to do

⚠️ Safety
• Drink plenty of fluids.
• Stay in an air-conditioned room.
• Avoid leaving young children and pets in unattended vehicles.
• Limit strenuous activities to early morning or evening.
📊 The numbers, from wweather1 data
Washington D.C.: now +39°, Clear.
That is 9° above the July climate norm.
The record for this date is +38° (1966).
Three-day forecast: 3 July: +40°/+27° · 4 July: +41°/+27° · 5 July: +35°/+21°
The figures are computed automatically from the Open-Meteo/ERA5 archive — no eyeball estimates.

🌍 Weather in nearby cities

📰 Data source: NWS. Forecast and analysis — wweather1, based on Open-Meteo / met.no data.

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