If it's a tropical hibiscus (and it most likely is)...Nope! Won't be OK outside at all! It's a tropical, so gets damaged at temps below 40 and will die if exposed to a hard frost (below 25).
You need to bring it inside and keep in front of a window with as much sunlight as possible. This way, it is possible to keep it blooming all winter.
This site has great info:
http://trop-hibiscus.com/gindr.html

Barb