Driving could be dangerous this afternoon as snow is expected to fall quickly over the area, the National Weather Service warned, including York as one of several counties named in a hazardous weather outlook.
The State College-based service issued the advisory early this morning, saying snow showers and squalls could produce a "quick inch of snow" in some places. The snow could result in dangerous driving conditions with periods of low visibility and icy roads.
Today is one of at least three days this week in which snow is forecast.
According to the forecast, there's a chance of snow showers after 1 p.m. this afternoon, which has a high near 39 degrees. Total daytime accumulation of less than a half inch is possible.
Snow is expected to taper off tonight, which is forecast to be mostly cloudy with a low around 18.
Colder weather is moving into the area for the rest of the week, with Tuesday's high near 22 and low near 10. Winds could be as high as 30 mph.
Wednesday will be partly sunny with a high near 23 and overnight low of around 8.
There's another chance of snow in the forecast for Thursday, which is expected to be partly sunny with a high near 26 and low around 22. The chance of precipitation is 50 percent.
Forecasters said snow is likely Friday, which will be cloudy and have a high near 30. Chance of precipitation is 60%.
Friday's low is around 14.
And for the weekend, forecasters are expecting mostly sunny skies Saturday with a high near 27 and low near 10.