Nbc10 first alert meteorologist justin godynick has the full forecast. Be prepared with the most accurate 10-day forecast for philadelphia , pennsylvania with highs, lows, chance of precipitation from the weather channel and weather. com The heartland will be warmest, with highs 25–30° above average. · summer heat is settling in, poised to create sizzling conditions across the region stretching into next week and possibly evolving into a long-duration heat wave. · heat alerts will be in effect across the philadelphia region starting sunday as saturday kicks off a multi-day heat wave. Another heat wave is set to hit the philly region this week. Rain today is limited to western washington while lake effect snow continues east of lake ontario. · a dangerous heat wave this weekend in the philadelphia area is expected to bring scorching temperatures and soaring heat indexes as a heat dome approaches just as the first day of summer is set to arrive. Starts the week calm and unseasonably warm. Only the gulf coast stays chilly. · most of the u. s.
