Forecast: Active weather week brings rain, sleet, snow and temperature shifts

After canceling a winter weather advisory for south and eastern Long Island, National Weather Service forecasters Monday were looking toward an active weather week with temperature shifts, sleet, rain and possible snow Thursday.

Monday night, Long Island’s North Shore was under a winter weather advisory until 1 a.m. Tuesday as a "wintry mix" of patchy sleet moved in. National Weather Service forecasters called for up to half an inch of freezing rain for parts of northern Nassau and northwestern Suffolk County.

But rain was expected for the East End and South Shore, as temperatures there were rising above freezing, yielding what weather service meteorologist Faye Morrone said would be "plain old regular rain" lasting into Tuesday morning.

The precipitation in either form was the remnant of the storm that charged across the country in recent days, bringing heavy snow, ice and unusually frigid temperatures to the South and West.

Tuesday, temperatures will keep rising into the 40s, giving Long Island a warm break before they plummet again to a low in the 20s Tuesday night.

Then, after a sunny, cold day Wednesday, forecasters are watching a system expected to bring "accumulating" snow Thursday morning. But the storm should transition to sleet and rain in the afternoon and all rain by night.

Friday highs, bouncing back to near 40 degrees, could melt most of any snow that lingers, said Morrone. The week "will certainly be active, weather-wise," she said.