Saturday's soft opening for sightseeing allowed staff to have a "dry run" at operations before the weather turned.
It was hoped conditions would be favourable for snowmaking from tomorrow, she said.
The Snow Farm Nordic ski resort also opened on Saturday for sightseeing and a boot sale and will announce its opening for skiing when the snow comes.
Weather and conditions permitting, Cardrona is scheduled to reopen to skiers and snowboarders from Friday, while Treble Cone is scheduled to open on June 25.