The weather does'n show on my front page anymore ..how can I get it back?

[AC Question]

I use to see when I open.but not anymore..

 

[belodion]

Look in your widget locker. If there, long-press, drag and drop to the Home page.

 

[B. Diddy]

Welcome to Android Central! Which device? As belodion mentioned, go through your Add Widget process to add it back. Usually, you start by long-pressing an empty part of the homescreen, then tap Add Widget.