Hour-by-Hour Snow, Freezing Rain Forecast for Westchester

Anywhere from 1 to 4 inches of snow is expected to fall on the lower Hudson Valley Monday -- and combined with freezing rain, there’s the potential for roads to turn into sheets of ice during the evening hours and still be icy early Tuesday morning.

A winter weather advisory went into effect at 1 p.m. and lasts until Tuesday morning. The latest National Weather Service snowfall totals map says up to 1 inch of snow is likely in southern Westchester, with 2-3 expected to accumulate in Rockland and northern Westchester and 3-4 in Putnam County.

An ice glaze is predicted for the entire region.

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The snow is expected to develop Monday afternoon before briefly mixing with and then changing to freezing rain. The precipitation is then expected to turn to all rain by Tuesday morning.

“A slow thaw of frozen ground will likely result in icing of untreated road surfaces and walkways this evening into late tonight...making travel dangerous,” the winter weather advisory says. “These conditions will impact the evening commute.”

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While air temperatures are forecast to climb above freezing Monday evening, the ground surface itself will likely still be below freezing, the NWS said in a storm briefing.

The icing threat should end during the Tuesday morning commute as temperatures are expected to top 40 degrees on their way to the mid-50s in the afternoon.

Moderate to heavy rain will be likely on Tuesday, which combined with any snow melt and initially frozen ground could cause flooding, the NWS says. Wind gusts on Tuesday could also reach 45 mph.

Here’s the latest hour-by hour forecast:

MONDAY

4PM: snow likely, 26 degrees

6PM: snow likely, 28 degrees

8PM: snow mixed with sleet likely, 30 degrees

10PM: diminishing chance of snow and sleet, 31 degrees

MIDNIGHT: slight chance of snow and sleet, 36 degrees

TUESDAY

2AM: rain likely, 41 degrees

4AM: rain likely, 44 degrees

6AM: rain likely, 45 degrees

8AM: rain likely, 47 degrees

Want more details? Click here for Larchmont and Mamaroneck’s in-depth weather forecast.