Another round of chance of showers and thunderstorms is possible this afternoon. Once again, heavy rain could lead to some street and subway flooding this evening. Showers will end early tonight and the humidity will begin to come down. It then turns hot for the rest of the week. Temperatures could reach 90 or better for three days in a row which would make it the third heat wave of the summer. Showers and thunderstorms will return Friday evening with another shot at a passing thunderstorm on Saturday.