This should be a pretty easy cache to do anytime. The only thing that may be an issue is if they plow snow in this direction, the cache will be then reachable with a little climb. Too small to leave anything, just sign the log with your pen.
Thanks!
2021 Updates: This location no longer has Kona all year round. More importantly, there seems to be an open electrical box somewhere near the cache, do not stick your fingers in there looking for something which is not there!