As of 18:30 today(saturday the 19th) at Lake O'Hara it had rained most of the afternoon to around 3400m. A very light dusting of snow was visible above 3200m but it was only on some ledges and definetly not widespread.
O'Hara is as ice and snow free as I have ever seen it!
Larry Stanier
ACMG/IFMGA Mountain Guide