Same story for me here. I've worked for many pt. 135 companies, and I've never been questioned about a weather decision.

Surprisingly (to me at least) I've also never had a passenger argue a point. People would rather miss a meeting than be flying in a thunderstorm, etc. I always give them the option of 'We can go later in the day/We can stay overnight and leave early in the morning/We can not go at all' and so far at least no one's ever given me a hard time.