See here for details on how to install
https://www.racedepartment.com/downloads/sol-2-1-weather-plan-24hr-le-mans.42773
Set race length to 8 -10 laps
Each timing segment = 2mins but can be adjusted to suit
My F1 Custom championship can be found here...
This mod makes the career mode takes only the clear weather condition. Tested ONLY in career mode.
To install it, just replace this file in the original one (MAKE A BACKUP) in DATA/DB/ folder.
1. Unpack DATA.MIX file with MixFile Remixer;
2. Replace the file DATA/DB/DB_WEEKENDS.BML;
3. Repack...