My HTC a9 19 1 is an Android 2.3 system. How do I set a digital clock with weather?

First, delete your original time display, hold it down for a long time, then it will turn into a green edge that can move around, drag it to the lower right corner, delete it, then click the sketchpad in the lower right corner and click the widget.

Then there is a clock in it.

There are many formats in it.

Then order one you like and serve.

Hey hey.

hope this helps