Be careful while driving on roads and walking on sidewalks driveways Tuesday morning.
An area of snow and an icy mix is moving into the region from Baltimore and temperatures will stay below freezing overnight.
"Freezing rain, sleet and snow will move through and stick to roads that aren't treated," said NBC10 First Alert Weather Meteorologist Sheena Parveen.
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Freezing rain and sleet created icy conditions on roads Monday night as northeasterly winds pushed cold New England air into our region.
The National Weather Service issued a Winter Weather Advisory for Philadelphia and Delaware County in Pennsylvania and Camden, Burlington and Ocean counties in New Jersey that will last until 6 a.m. Tuesday.
There was little to no accumulation from the latest system but the timing of the storm still impacted commuters as they left work Monday.
"It may be safer to head out before it gets dark," said NBC10 First Alert Meteorologist Glenn "Hurricane" Schwartz. "Try to stay on roads that would be treated as much as possible. And be careful walking on sidewalks and driveways."
Since temperatures remained below the freezing mark all of Monday, any precipitation -- even a light drizzle -- that fell caused slippery conditions. In Middlesex County, at least one person was killed while dozens were hurt after a 15-vehicle pileup involving a bus and tractor trailer. Officials haven't confirmed whether the crash was caused by icy conditions but one twitter user described the area as a "skating rink."
Some schools closed Monday after icing occurred.
As areas closer to Philadelphia dealt with freezing rain and a wintry mix, the Poconos and Lehigh Valley saw light snow.
The wet weather will clear out Tuesday as highs head into the low 40s, but the region will only get a short break from the precipitation. Wednesday will be sunny with highs in the mid 30s. More rain and snow is expected to hit the area Thursday as temps hover near the 40 degree mark.
Temperatures plummet Thursday -- lows will be in the teens making way for a bitter cold weekend and the chance of more snow.
Stay with NBC10.com for the latest weather updates.