I just thought of another possible experiment. After you dock in base,
but before you go out on a new patrol, change the WeatherRndInterval value in the three Campaign.mis files to a very high number, preferably between 72 and 96. Reload the game and note how long it takes for your weather to change from nice to crappy. If player editing makes any difference, it should take
at least 3-4 days before your weather changes (and maybe even longer than that). On the other hand, if your weather changes in less than 3 days, then we are probably safe to assume that the WeatherRndInterval number is set in the executable and that user input is irrelevant.
I think I will create a new career myself and check this out. Anyone else who wishes to test my theory are more than welcome to do so! Post your results (and any results from the experiment mentioned in my previous post) to this thread. Thanks!