Pittsburgh is starting Friday, August 21, with dense fog, limited visibility and temperatures near 61 degrees. A Dense Fog Advisory remains in effect through 9 a.m., making the early commute a slower-than-usual affair, especially near river valleys and other low-lying areas. The fog should lift after sunrise, giving way to a bright and comfortable afternoon.
Once the gray curtain pulls back, sunshine will take over and temperatures will climb steadily into the low 80s. East winds should remain light at around 5 mph, with no rain expected during the day, according to the National Weather Service Pittsburgh.
Sunny Friday Leads Into A Stormier Saturday
Friday night should stay mostly clear, with temperatures falling to around 62 degrees. Saturday, August 22, will be warmer at about 82 degrees, but patchy fog could return between 7 and 9 a.m. before a chance of showers and thunderstorms develops.
The storm risk increases Saturday night, when showers and thunderstorms are expected and the chance of rain rises to 90%. Forecasters say storms arriving during the afternoon or evening could produce locally damaging wind gusts, so outdoor plans may need a backup option once clouds begin building.
Cooler, Unsettled Sunday
Showers and thunderstorms may continue into Sunday morning and afternoon, with a 50% chance of precipitation and a high near 76 degrees. West winds could reach 13 mph, adding a noticeably cooler feel after Saturday's warmth.
Rain chances taper Sunday night, when skies turn partly cloudy and temperatures drop to around 58 degrees. Monday looks much quieter, with sunshine, a high near 76 and only a minimal chance of rain.
Quiet Start To Next Week
Mostly sunny skies are expected Tuesday and Wednesday, with highs near 78 and 80 degrees. A few showers could return Wednesday night, followed by another chance of showers and thunderstorms Thursday as temperatures rise to around 82.
Drivers should use low-beam headlights, slow down and leave extra space while the fog advisory is active Friday morning. Visibility at the reporting station was roughly one-eighth of a mile before sunrise, but conditions are expected to improve quickly after morning heating begins.
