Text formatting

Hi all-

How can I change the text to either begin with capital letters or convert all to upper-case?

This is what it looks like now:
http://i1345.photobucket.com/albums/p670/humblecolor/Weather/weatherCapture_zps6ab70919.png

I’d like the labels to at least begin with capital letters…instead of “real feel”->”Real Feel” and “current pressure” -> “Current Pressure” and so on. I might even be able to live with all upper-case.

Any ideas? As always, thank you.

http://wordpress.org/extend/plugins/wp-forecast/