Tonight: Mostly clear and starlit skies are forecast for tonight. Temperatures will drop to the lower 30s in the city and as far as the lower 20s in the suburbs to the south and east. Winds will be calm and from the west.
Tomorrow: High pressure will be the dominant feature tomorrow and continue to be the dominant feature of the weekend. It will enable mostly sunny skies to continue into Friday and temperatures will reach the lower 50s in the city and upper 40s in the suburbs to the north and west of Philadelphia. Winds will shift to the south at 5-10 mph.