The cool front sliding through the area will bring the coolest temperatures of the season.By Ron Smiley

PITTSBURGH (KDKA) – Big changes are underway with the weather as a cool front slid through Friday morning.

The front and accompanying trough have brought with it the coldest air of the season so far. The National Weather Service has issued frost and freeze advisories due to the much cooler temperatures.

(Photo Credit: KDKA)

A Frost Advisory has been issued for Allegheny, Beaver, Fayette, Greene, Washington and Westmoreland counties from 2 a.m. to 9 a.m. Saturday.

A Freeze Warning is in effect for the Fayette Ridges and Westmoreland Ridges during the same time period.

Parts of Ohio and West Virginia are also under these advisories.

Rain showers wrapped up around 9 a.m. with most places seeing a dry morning commute.

Sunshine began arriving this afternoon and it will stay mostly clear through Sunday morning.

After the chilly start on Saturday, highs should climb into the mid-50s.

Current Conditions | School Delays & Closings | Local Radar | Weather App | Photos

Sunday will be warmer with morning lows closer to 40 degrees and high in the mid-60s.

Stay up to date with the KDKA app, which you can download here.