Baltimore, Maryland – Temperatures will climb into the upper 80s by Thursday afternoon, pushing near 90°F and bringing a summerlike stretch of heat across Maryland and Delaware ahead of a late-period shift toward storms.
According to the National Weather Service and NOAA’s Climate Prediction Center, the region is in a 70 to 80 percent probability zone for above-normal temperatures from April 16 through April 20. A broad heat dome over the Mid-Atlantic will suppress rainfall early, allowing temperatures to steadily rise through the end of the workweek.
In Baltimore and across Baltimore County, Anne Arundel, and Howard counties, highs are expected to reach 86 to 90°F between 2 p.m. and 6 p.m., with overnight lows holding in the upper 60s. In Delaware, including Wilmington, Dover, and Newark, similar conditions will develop with dry air and strong sunshine accelerating vegetation drying.
Along the I-95 corridor and Route 1 through central Delaware, dry conditions and increasing southwest winds will elevate wildfire risk in wooded and suburban areas. Coastal areas such as Ocean City and Rehoboth Beach will remain slightly cooler in the low to mid-80s due to ocean influence, but rainfall will remain limited.
The precipitation outlook shows near-normal to slightly below-normal rainfall early in the period, shifting to a 40 to 50 percent chance of above-normal precipitation between April 18 and April 22. A corridor of heavier rainfall may develop across the Mid-Atlantic, including Maryland and Delaware.
Residents should avoid outdoor burning, stay hydrated, and limit activity during peak afternoon heat. Drivers along I-95, I-695, and Delaware Route 1 should remain alert for increasing winds and changing conditions late in the period.
The most consistent heat is expected through April 19, followed by increasing storm chances into early next week. Additional advisories are likely as this pattern transitions from dry heat to a more active weather setup.
