It's beautiful out (8)
I believe the answer is:
striking
I believe this clue is a double definition.
'it's beautiful' is the first definition.
'out' is the second definition.
(I've seen this before)
(Other definitions for striking that I've seen before include "Attracting attention by reason of being unusual" , "Remarkable; hitting" , "Delivering a blow" , "Dramatically beautiful" , "Prominent" .)