Many of our vandas are budding and blooming right now too. Though we grow in a greenhouse where there is not drastic temp changes, the temps range can get down to 50 at times where some of the vandas hang. I would *guess* where you live it would be fine to put it out in 70 degree weather. JMO. I sure don't want to be the one that gets you to put it out there and the buds fall off though. Hopefully some people who grow outside can help with this one.