erin: della donne and the mystics hosted the storm. they were on fire hitting ten three-pointers. she led the way as the mystics pick up the second win. >> it will be a great matchup between two cy young winners at nats this is as the nationals host the cubs. >> perfect weather at the ballpark. it's clear and cool by morning. 50 to 60. the range of the temperatures. steve is keeping an eye on the weekend. the sizzling heat coming in. the fourth of the july beach outlook. this is what we see ahead. tomorrow is the low humidity. bright sunshine. 83. partly to mostly sunny. warmer. more humid. 90 on thursday. friday, plain hot and humid to end the week. steve has more on that. this is the time of year we expect this. >> it is. >> you will feel the change. >> "world news tonight" with david muir is coming up next. jonathan: thank you for watching. see you tonight at 11:00. have a great night. there are always new challenges and opportunities., at unitedhealth group, we're built to help with both. providing employers with data and insights to improve outcomes. ensuring seniors have sta

won four straight entering toni the mystics are currently in first place in the week with elena della donne26 points a game. mystics go for their fifth straight win tonight, 8:00 p.m. tip in dallas. >>> stanley cup finals, "nashville" continuing to be the hockey capital of the country. the predators even the series after scoring three unanswered goals last night in smashville. is justin bieber to blame for the penguins' struggles? he posted this picture, and now pittsburgh has lost two straight. bieber took to twitter saying, he supports all sports and will wear any jersey that looks cool. i don't know if you remember at the maple leafs game two, he had a jersey on, and that didn't work out too well. good for the caps, but there might be something to that. >> tomorrow's weather, also coming from canada. you can blame too. [ laughter ] >> there you go. another one. >> that's a bad storm too. >> "nightly news" is heading stronger is rebuilding a newborn's heart... and restoring a father's faith. it's standing tall after one surgery... not six.