i use yawcam but would like to add the temp and wind direction to it but dunno how
This is definitely possible. I've done it before with cumulus, worked well. Not sure if its possible with other weather software though?
Another idea. At the moment i'm using YawCam to save my webcam image as "webcam-upload.jpg"
I've then got a PHP script set to run every minute which opens the webcam-upload file, reads the temperature off the realtime.txt file, adds that and any other desired text where i've set it as and saves the new picture with text as "webcam.jpg"
The text is much better quality than what I used to get from YawCam.