iphone weather app disappeared from my iphone, how do i get it back?

i see this is years old but i too deleted my pretty little weather app i searched gave up took accuweather no homescreen icon like default But at last sound the trumpets in the app store search iphone weather app and there it was so long accuweather Hello iphone weather app its weather.com but the settings are weather channel i dont like weather channels app so i’ll just keep the og original weather app and watch my little fingers so it wont get deleted again .....I’mHappyHappy-Again

You can't delete the built in apps. You either moved it to another page or into a folder. If you can't find it: Settings>General>Resets>Reset Home Page Layout.

It will not erase them, but it will rearrange the icons for them when it puts the default icons back in their original locations.

A folder is an icon that holds other icons.