Overview: Long Island is heading into a stretch of weather that begins with a chilly, windy feel more like winter than spring, before gradually moderating into milder conditions. After a cold start overnight into Sunday, temperatures will slowly climb through early next week. While the ocean will keep things a bit cooler than inland areas, a noticeable warm-up still arrives by midweek. That warmer pattern may turn unsettled, though, as a nearby frontal boundary brings the chance for showers—and possibly thunderstorms—by the middle of the week.

Overnight (cold and breezy): Cold air settles over Long Island, setting up an unseasonably chilly overnight. The proximity to the ocean will add to the chill, keep wind chills in the 30s for much of the day and giving the area a raw, early-spring feel. Temperatures will drop to near or below freezing, with wind chills in the 20s.

Sunday through Tuesday (slow warm-up near the coast): Conditions begin to improve by Sunday as winds shift and milder air starts to move in. However, on Long Island, the nearby ocean will slow the warming trend compared to inland areas. Temperatures will gradually rise each day, but periods of cloud cover and onshore flow may keep readings a bit cooler than surrounding regions. Even so, by Monday and Tuesday, it will feel more like spring, just with a slightly cooler edge along the coast.

Wednesday into Thursday (milder, then unsettled): Long Island will see its warmest conditions of the stretch by Wednesday, though still somewhat tempered by the ocean influence. Temperatures should reach well into the 60s and possibly near 70 in spots. As a frontal system approaches and moves through late Wednesday into Wednesday night, chances increase for showers and possibly thunderstorms. Some of these could bring heavier downpours, marking the most unsettled period of the forecast before conditions begin to change again.