Saturday was an amazing day and Long Islanders took advantage of the warm weather. With a good deal of sun, temperatures across Long Island reached the mid to upper 50s. Cooler readings stayed in parts of the East End and anywhere near a shoreline that had the pleasure of a colder wind from the ocean waters. A weak system passes by Saturday night and could produce a scattered rain or snow shower, depending on temperature. Precipitation totals are nothing of consequence.
Sunday turns out to be a chilly day with at least partly sunny skies and highs around 40. Clouds come in later in the day and this is the beginning of a train of weak systems that ride along a frontal boundary stuck over the region through Monday night. This gives Long Island light precip chances, but again nothing of consequence, on and off until the boundary clears Tuesday. Highs on Monday remain in the 40s, and could reach or exceed 50 with enough sunny breaks. With clearing Tuesday, temperatures should rise making for another spring-like day.
The middle of the week features a continued threat for a storm that brings rain and snow Wednesday into Thursday. At this time, there still are questions. A bit of a consensus among long-range operational models shows rain Wednesday ending as a period of snow early Thursday. The storm's original energy still needs to make "landfall" in the Northwest U.S. Once it does, more observations will add to the accuracy of model forecasts. The result could be a significant change to the forecast, in any manner, by Tuesday.