If you just encounter into this right now in the past period, consider yourself lucky.
We still have this problem unfortunately
The furthest I can go with the live weather is:
Have a good first flight
Load the second leg in the sim, at the departure I have a proper weather from the first flight, but at the destination is “- -”
As btdc00 posted above, we already have a thread about this showing the problem. Go place your vote there instead of fragmenting it into another thread about the same thing. The more votes we can get on that thread, the more likely it is Asobo will give a ■■■■ enough to look into this.