Re: will there be dynamic weather in the game?
The interview linked below included the following question and answer which conclusively rules out weather being a feature, at least at launch. (DB = Lead Producer David Baker.)
OS: Is progressive lighting included? What about various types of weather conditions that affect course conditions?
DB: We have 3 times of day for each course to be played. Morning, Mid-Day and Late Afternoon. Weather conditions are not a part of launch. So it will not affect gameplay.
https://www.operationsports.com/ea-sports-pga-tour-interview-with-development-team-gameplay/