There are 2 well developed Dashboards currently being used for Smartthings.
The Home Automation Dashboard (a little involved to get setup and working, but very customizable):
And the ActiON Dashboard which is a little less customizable, but much simpler to setup:
I havent tried getting the Humidity and temp in to the Action dashboard yet, but its a breeze in the HA Dashboard (once you get it running).
hope that helps.