I accidently deleted my clock and weather think on my home screen how do i get it back?

it is a widget, just do a long press on the screen and select widgets.

you should be able to find the one you lost amongst the many presented there.
 
Omgosh...I feel like the previous 2 posters...I just pressed on it and it worked. I spent a LOT of time trying to figure this out earlier and this solution was so simple! Thanks!