I have 5 weather apps on my iPhone. The default one from Apple, Weatherbug Elite, Accuweather, The Weather Channel, and "Hot Weather" (a pinup app, lol.)
If you don't want to pay and/or are irritated with ads, there are other choices for you. There are 30+ pages of choices. I'm afraid I can't help you if you are too cheap, too easily irritated, AND too lazy to look. It's like you want me to load your iPhone for you. sheesh!