 The 930 WFMD sky scan forecast for Frederick and surrounding counties. We have a heat advisory from 11 a.m. to late p.m. This afternoon, partly sunny and hot with scattered showers and thunderstorms. High 98. Heat index 106. Thunderstorms tonight will have a low of 72. Maybe a shower Thursday. Otherwise, partly sunny. High 88. Sunny Friday. High 88. PJ's Roofing. When it comes to your roof, they've got you covered. Visit PJsRoofing.com. I'm meteorologist Jim Rinaldi.