>>57408753it's in RPGmaker, go to an event, open the event commands on a new line, go to the last page, and click on 'Script..'
it actually looks like the basegame/LAWDS prefers to set rain using Set Weather like so (this is for route 6 neved, or you could use flora/florin's gym fight), it might work for hail as well but if you wanted to set sun/sand you'd have to use $game_screen.weather.