Mythical Wx
Freight Dog is right fellas...I have been flying with a large freight operator for almost a year, and you will never see an off night because of weather. Companies will always look at the legal aspect of the weather and you must at least attempt a run at it. However, YOU are the PIC and may choose to cancel the flight, but, as you soon learn, most severe weather passes in due time and isn't always as bad as it looks on radar.
Take Florida this time of year for example. As pilots in training and CFI's, most of us look at the radar around 14:00 and don't even think twice about a long X-C. After a few weeks (maybe days, depending upon luck) you will learn that most weather is circumnavigable. Freight flying is a tough business. Anyone who operates here will tell you, myself included. But, just as with any other aspect of commercial aviation, you will have to deal with Wx. Whether its 500 pounds of checks and lab work, 500 or 5 passengers, that you haul...we all fly through the same garbage.
As for everyone jamming each other up on this board, you have to learn to take everything with a grain of salt. I actually find it humourous to read some of the replies... Don't be afraid to ask questions, but do expect to get some pretty harsh feedback from somebody. No matter what the post, someone is looking to slam you, so just expect it.