Timing: When will the snow, rain, bitter temperatures arrive?

January 29, 2019

Parts of Connecticut are under a Winter Weather Advisory until 6 a.m. Wednesday.

Northern Fairfield County and all of Litchfield and Hartford counties are under the advisory.

The highest amounts of snow - between 3 and 6 inches - are expected in the higher terrain of northwest Connecticut.

When will the precipitation start and end?

Precipitation will overspread the area from west to east through the day Tuesday as an area of low pressure approaches from the west.

Coastal Connecticut will be warm enough for all rain.

In between, precipitation could start as a brief period of snow or a mix of rain and snow before transitioning to all rain through the afternoon.

In inland western Connecticut, there’s a chance of snow - or flurries - between 10 a.m. to 2 p.m. The best chance of snow for this area is 6 p.m. to midnight.

In southern Connecticut and along the shoreline, the best chance of rain is between 4 p.m. and midnight; less than a half-inch of rain is expected. If any snow falls in southern Connecticut and the shoreline it will be between midnight and 3 a.m. Wednesday.

In the Northwest Hills, snow is likely between between 2 p.m. and midnight. Heaviest snow will be between 4 p.m. and midnight.

As precipitation tapers off tonight, areas that saw rain during the day could see precipitation end as a period of snow or a mix of rain and snow as temperatures fall into the teens and 20s by early Wednesday morning

Snow should end by daybreak Wednesday

Snowfall estimates

Along the shoreline: Less than an inch.

Southbury, Oxford, Waterbury and Danbury: Between 2-3 inches.

Middletown: Less than an inch.

Torrington, Litchfield: 3-6 inches.

Norfolk, Canaan: Up to 6 inches.

Berkshires of western Massachusetts, southern Vermont: 5 -10 inches.

Catskills: 9 to 14 inches.

Wednesday morning commute

Snow in northern Connecticut will likely cause some school delays Wednesday.

The big concern is falling temperatures that will freeze wet roads and snow-covered roads.

Untreated roads may remain slippery for the morning commute.

Bitter cold temperatures

An arctic front then crosses the area Wednesday afternoon, bringing with it gusty winds and a chance of snow showers. As an arctic airmass settles over the region, temperatures will fall into the single digits to around zero by early Thursday morning.

There will be a more than 20-degree temperature drop between noon Wednesday and 5 a.m Thursday.

A few below zero temperatures are possible well north. Wind chill values early Thursday morning will range from 10 to 20 degrees below zero and will only rise to around zero during the day on Thursday as temperatures remain in the teens.

Specific forecasts

Because forecasts vary because of location and elevation, click HERE four your town’s forecast, just enter your towns name or zip code in the upper left box of the pagem, next to GO.

Update hourly