Delmarva starts the week with marine clouds and patchy fog as an onshore flow keeps skies gray and temperatures mild. A cold front will bring showers and a low-end severe threat Tuesday before high pressure brings sunshine and near 90-degree warmth by midweek. Rain chances return by the weekend as another front approaches.

Delmarva faces a marginal risk for severe storms Sunday afternoon and evening as a frontal boundary stalls over the region. Showers and thunderstorms—some potentially strong with damaging winds and isolated tornadoes—could impact parts of the peninsula, especially the southwest. Quieter weather returns Monday before another round of rain and storms arrives Tuesday. The second half of the week turns drier and significantly warmer, with highs reaching the 80s and possibly nearing 90.

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A strong cold front is expected to move through Delmarva late Monday, bringing the potential for strong to severe thunderstorms, heavy rainfall, and localized flooding. The worst of the weather is expected between 8 p.m. and 3 a.m. Tuesday. Cooler and drier conditions return Tuesday, but unsettled weather is likely to end the week.