Philadelphia, PA – A migrating heat dome is set to drive temperatures into the mid to upper 80s across the Mid-Atlantic within days, bringing widespread early-season heat and repeated storm chances that could disrupt major travel corridors through early April.
According to the National Weather Service Climate Prediction Center, a 70 to 80 percent probability of above-normal temperatures will dominate Pennsylvania, New Jersey, Delaware, Maryland, and Virginia from April 3 through April 9. Highs across the I-95 corridor, including Philadelphia, Baltimore, Wilmington, and Richmond, are expected to run 10 to 20 degrees above seasonal averages, with several areas nearing 90 degrees. Overnight lows will remain unusually warm, limiting relief.
The Mid-Atlantic sits along the northern edge of the heat dome, where hot, humid air will interact with passing disturbances to fuel repeated rounds of showers and thunderstorms.
Rain chances increase region-wide, especially during afternoon and evening hours. Heavier downpours could impact heavily traveled routes including I-95, I-76, I-70, and I-64, leading to reduced visibility and water-covered roads during peak commute times.
Residents are urged to stay hydrated, limit strenuous outdoor activity during peak heat, and avoid driving through flooded roadways.
This pattern is expected to persist through April 3–9, with additional advisories likely as storm timing and rainfall totals become more defined.
