Hi Cavalin,
This is a known issue which is a little more apparent on splitscreen but does occur for a lot of players. The team are looking into this issue which is possibly caused by weather fx overlaping causing an unintentional buildup and limited visibility.
In the mean time, while not ideal, restarting the game or clearing the cache of the console (shutting down and unplugging for 5 mins) can often reset the weather for you.
Clare