However, your iPad does have a native Weather Widget, accessible from the Today view of your first Home Screen, which links to the Weather.com website.
If you are looking a weather there are many to choose from in the Apple App Store - some of which may be specific to your geographic region.
While there are many Weather Apps to choose from in the App Store, one of the popular choices is Windy:
https://apps.apple.com/gb/app/windy-com/id1161387262
Windy has full Widget integration - and all but a few “premium” features are totally free to use. It is endlessly configurable to your needs. If there’s a metrological feature or measurement that you need, you’ll find it.
I hope this insight proves to be helpful.