After a cool and unsettled start to May, summer-like warmth is expected to surge across the eastern United States over the next several days, bringing temperatures closer to July than mid-spring.

Forecasters say a large area of unusually warm air will spread from the Plains into the Midwest, Mid-Atlantic and Northeast by the weekend and early next week, sending temperatures 10 to 20 degrees above normal in some locations.

Major Interstate 95 cities from Washington to New York and Boston are expected to see highs climb into the upper 80s and near 90 degrees by Monday and Tuesday.

The warm-up will also be felt across Pennsylvania, including South Central Pennsylvania, where temperatures are expected to steadily rise through the weekend. Highs in the Harrisburg, Gettysburg, and York areas could approach the mid-to-upper 80s early next week, a sharp change from the cooler-than-average conditions that have dominated much of the spring season.

The heat first developed in the western United States before shifting eastward later this week. Cities including Atlanta, Nashville and Cincinnati are also expected to experience highs in the upper 80s and low 90s.

Meteorologists say the warming trend may persist for several days rather than being limited to a brief one- or two-day spike. Some locations stretching from Missouri to New Jersey could challenge daily record highs by Sunday and Monday.

The warm stretch arrives with summer still more than a month away, offering the East Coast its first widespread taste of true summer heat in 2026.

Source: Fox Weather