Snow may be on the way later this week.
A weather system will move into the region late Wednesday night in Thursday bringing rain at first before possibly mixing with and then changing over to snow.
A period of accumulating snow is forecast to occur after the changeover to snow, forecasters said.
Hazardous travel conditions are possible late Wednesday night and Thursday, impacting the morning rush.
Snow could seem unlikely Wednesday afternoon, as the area basks in unseasonable mid-60-degree temperatures, but the mercury will fall into the low 30s after sunset and looks to remain there Thursday, forecasters said.
According to the National Weather Service, 2 inches of snow is most likely in Philadelphia with 3 inches in Doylestown, Bucks County. An inch or two is possible from the upper Delmarva into parts of southern New Jersey.
Snowfall amounts in the southern counties should be less than an inch, but there is only moderate confidence in the snowfall forecast at this point, forecasters said. They noted there is uncertainty regarding the arrival and departure of the precipitation and how long the cold will stick around.
Here is the 7-day forecast from the weather service:
PHILADELPHIA
Monday night: A chance of rain, mainly after 4 a.m. Increasing clouds, with a low around 38. South wind around 6 mph. Chance of precipitation is 30 percent. New precipitation amounts of less than a tenth of an inch possible.
Tuesday: Rain likely, mainly between 8 a.m. and noon. Cloudy, with a high near 59. South wind 5 to 10 mph. Chance of precipitation is 70 percent. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday night: Rain likely before 7 p.m., then a chance of showers after 7 p.m. Cloudy, with a low around 54. South wind 10 to 13 mph. Chance of precipitation is 60 percent. New precipitation amounts of less than a tenth of an inch possible.
Wednesday: A slight chance of showers. Mostly cloudy, with a high near 64. Southwest wind around 11 mph becoming northwest in the afternoon. Chance of precipitation is 20 percent.
Wednesday Night: Rain likely before 5 a.m., then rain and snow likely. Mostly cloudy, with a low around 34. North wind 8 to 10 mph. Chance of precipitation is 70 percent. New snow accumulation of less than a half inch possible.
Thursday: Snow likely, mainly before noon. Mostly cloudy, with a high near 36. Chance of precipitation is 60 percent.
Thursday night: Partly cloudy, with a low around 23.
Friday: Mostly sunny, with a high near 35.
Friday night: Mostly cloudy, with a low around 29.
Saturday: Mostly cloudy, with a high near 46.
Saturday night: A chance of rain. Mostly cloudy, with a low around 39. Chance of precipitation is 40 percent.
Sunday: A chance of rain. Mostly cloudy, with a high near 53. Chance of precipitation is 40 percent.
Sunday night: A chance of rain. Mostly cloudy, with a low around 38. Chance of precipitation is 30 percent.
Monday: Mostly sunny, with a high near 49.
JERSEY SHORE
Monday night: A slight chance of rain after 1 a.m. Increasing clouds, with a low around 42. South wind 10 to 14 mph. Chance of precipitation is 20 percent.
Tuesday: A chance of rain, mainly after 5pm. Mostly cloudy, with a high near 51. South wind 14 to 18 mph. Chance of precipitation is 30 percent. New precipitation amounts of less than a tenth of an inch possible.
Tuesday night: A chance of rain before 7 p.m., then a chance of showers after 7 p.m. Cloudy, with a low around 50. Breezy, with a south wind 17 to 20 mph. Chance of precipitation is 40 percent. New precipitation amounts of less than a tenth of an inch possible.
Wednesday: A slight chance of showers after 1 p.m. Mostly cloudy, with a high near 59. Southwest wind 11 to 15 mph becoming west in the afternoon. Chance of precipitation is 20 percent.
Wednesday night: Rain likely, mainly after 1 a.m. Mostly cloudy, with a low around 36. North wind 10 to 15 mph. Chance of precipitation is 70 percent. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday: Rain likely before 9 a.m., then rain and snow likely. Mostly cloudy, with a high near 39. Chance of precipitation is 60 percent. New precipitation amounts between a quarter and half of an inch possible.
Thursday night: Partly cloudy, with a low around 22. Blustery.
Friday: Sunny, with a high near 37.
Friday night: Mostly cloudy, with a low around 29.
Saturday: Mostly cloudy, with a high near 47.
Saturday night: Mostly cloudy, with a low around 39.
Sunday: A chance of rain. Mostly cloudy, with a high near 51. Chance of precipitation is 40 percent.
Sunday night: Mostly cloudy, with a low around 40.
Monday: Mostly sunny, with a high near 49. Breezy.