Fog early Tuesday is expected to give way to sunshine and springlike warmth before patchy fog returns late Tuesday night into early Wednesday.

Dense fog and light rain are expected in Sussex County through Saturday before milder air begins arriving late in the day.

Dense fog is expected near the Delaware beaches late Wednesday, with mostly cloudy skies and occasional showers lingering through late Thursday.

Watch for dense fog in spots this morning, causing slick roads and bridge decks, with temperatures into the 20s to near 30.

Surface high pressure will dominate Delmarva's weather through early next week, bringing mostly clear skies and seasonable temperatures. Expect calm conditions tonight with lows in the low to mid 60s, and areas of patchy fog, which could be dense in some spots. Sunday will feature sunny skies with temperatures near 80 degrees and breezy conditions, especially along the coast. High pressure will gradually move offshore, but tranquil weather continues into Monday. A disturbance off the Southeastern U.S. coast may bring rain chances back to the region by Tuesday and Wednesday, with increasing clouds and humidity. Highs will remain in the upper 70s, with precipitation chances peaking midweek before high pressure potentially returns late next week.

Expect clear skies and cool temperatures tonight across Delmarva, with some patchy fog developing in rural and valley areas. Conditions will remain favorable for a pleasant mid-September evening.

The Delmarva Peninsula will experience limited thunderstorm activity, high humidity, overnight temperatures in the 70s, and potential marine layer fog along coastal areas tonight, with continued heat and humidity tomorrow.