It's rather late to be going up to 1900m, I'd have thought - especially given how exposed Ventoux is, and the fact that few French roads are salted, with the risk of ice at altitude. I won't be going over over any 1000m cols between the end of October and the end of March, let alone a 1900m mountain.
It was really nice and sunny last Saturday, we even had lunch outside halfway up in the cafe. As for salting they had done some up there on the darker side, and made a better job of it than they do here. Sunday though was another story, I would not have fancied that weather.