DELMARVA -- Monday will mark the beginning of another stretch of unsettled weather for Delmarva, as a stalled front advances northward as a warm front and sets the stage for a series of thunderstorms into Tuesday.

Highs Monday in the upper 80s to low 90s, scattered showers and t-storms in the afternoon.
Mostly sunny skies early Monday will help temperatures surge into the upper 80s to low 90s, still some inland locations could see some upper 90s heat indices prior to any storms developing.
By Monday afternoon and evening, the strengthening instability—will begin fueling scattered showers and thunderstorms across the region. Although the wind shear is expected to increase somewhat compared to Sunday, it will still be a limiting factor in widespread severe development. Storms could produce isolated strong downbursts capable of damaging wind gusts.
The Storm Prediction Center has placed a portion of the peninsula under a Marginal (Level 1 of 5) risk for severe thunderstorms Monday. Slow-moving storms will also pose a risk for localized flash flooding, particularly over urban corridors where drainage is limited.

Marginal (1 of 5) risk for an isolated severe storm Monday with a damaging wind threat.
Overnight Monday into early Tuesday morning, the warm front will continue lifting north, spreading scattered storms across Delmarva. Low temperatures will hold in the upper mid to upper 70s.
By Tuesday afternoon, the region will be fully entrenched in the warm sector, with high temperatures ranging from the upper 80s to low 90s once again and dew points climbing into the low to mid-70s. An amplifying upper-level trough will push east across the Northeast, driving a cold front toward the area by late day.
This setup will increase shear further, raising the potential for severe storms compared to Monday. However, forecast uncertainty remains over how long Tuesday morning’s convection might linger and whether cloud cover could suppress afternoon instability. If the clouds break early, models suggest enough clearing to support moderate destabilization.
The latest outlook has upgraded most of the region to a Slight (Level 2 of 5) risk for severe thunderstorms Tuesday, with damaging wind gusts the main concern.

Greater risk of severe storms Tuesday evening as a strong cold front pushes towards Delmarva. Damaging winds and flash flooding are the primary threats.
Flash flooding is also a significant threat, with the Excessive Rainfall Outlook placing Delmarva in a Slight (Level 2 of 4) risk. Precipitable water values could climb to 2–2.5 inches, and deep warm cloud layers will make storms efficient rain producers. If showers repeatedly train over the same areas, the flooding potential will be enhanced.
The cold front will slowly work across the region late Tuesday into early Wednesday, ending the severe threat by around midnight to 3 a.m. Some lingering showers may persist near the coast Wednesday morning, with lows dropping into the low 70s.
By later Wednesday and Thursday, drier air and building high pressure will bring relief from the oppressive humidity. Although an upper-level trough will remain over the Northeast and Mid-Atlantic, deeper moisture should be limited, keeping any additional showers isolated.
The forecast turns much more favorable as high pressure settles over the region heading into Friday and the Fourth of July weekend. Temperatures will hold in the upper 80s during the day, with dew points dipping into the low to mid-60s, delivering comfortable summer weather to close out the week.