I saw your post on the bump board, but since I'm TTA I thought I would give you my .02 over here:
I have an iphone and use FF and they have a really user-friendly mobile access page. All I did was save the FF page on my home screen (do it like you would make a bookmark) and then you just log in like you normally would and tap "mobile access". From there, you can click "today's temps" (or info? I can't remember exactly what it says) and put in your info like you normally would.
I love it, love it, love it.
I know there are a lot of charting pros over there, but if you ever have any questions or anything, I'm always here I may not always have the answers, but I usually have my copy of TCOYF handy!