Heavy fog made for cautious driving early Monday on Route...

Heavy fog made for cautious driving early Monday on Route 112 in Medford. A dense-fog advisory was in effect for Nassau and Suffolk counties through 9 a.m. Winter driving is expected to get trickier with freezing rain expected Monday night into Tuesday. (Jan. 14, 2013) Credit: James Carbone

Dense fog made for treacherous early morning commutes Monday, limiting visibility for drivers who are being urged to slow down.

The National Weather Service issued a dense fog advisory for Nassau and Suffolk until 9 a.m. The advisory warned "visibilities will frequently be reduced to one-quarter mile or less. If driving, slow down, use your low-beam headlights and leave plenty of distance between cars in case a sudden stop is needed."

The humidity was 100 percent and temperature was expected to climb into the low 50s -- and, forecasters said there is a chance of rain and sleet Monday evening. That precipitation could freeze overnight, when temperatures are expected to fall into the low 30s, and forecasters said snow and sleet are possible Tuesday night into Wednesday -- when rain and snow is considered "likely."

No significant accumulations are expected, though, though lower temperatures are expected later in the week.

NewsdayTV's Doug Geed is heading 'Out East' to showcase the ultimate local spots you need to explore. Credit: Randee Daddona, Michael A. Rupolo Sr.

Out East Show: Visit The Shamrock evergreen maze, Sannino Vineyard, Seven Ponds Orchard and the Warrior Ranch Foundation NewsdayTV's Doug Geed is heading 'Out East' to showcase the ultimate local spots you need to explore.

NewsdayTV's Doug Geed is heading 'Out East' to showcase the ultimate local spots you need to explore. Credit: Randee Daddona, Michael A. Rupolo Sr.

Out East Show: Visit The Shamrock evergreen maze, Sannino Vineyard, Seven Ponds Orchard and the Warrior Ranch Foundation NewsdayTV's Doug Geed is heading 'Out East' to showcase the ultimate local spots you need to explore.

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