SoCal, be sure to check the links on the Mt Whitney Weather page (link under the webcam images above). There are several good ones in there.

> but Cottonwood seems to be about a week behind (low battery?).

Not sure what you are seeing. Maybe try your browser's refresh button. We have a link on the Mt Whitney Weather page to it, and checking it there, it appears to be up-to-date.
Snow depth graph at Cottonwood Lakes, elev. 10150'