how to disable rain?

[Bsabbath325]

how to disable rain?

[Dark Nero *=_VF_=*]

I thing the rain is hardcode scripted, you can't change that.
Or, maybe it's part of the map, but you will need to open it in the map editor to confirm.

[Reborn]

On most maps the rain is controlled by entity called "func_precipitation", which can be toggled off by the scripts or server plugins, if you know how to do that.

In a local hosted game, you can simply set sv_cheats 1 and use command "ent_fire func_precipitation Alpha 0" to make it invisible (the audio will have to be modified separately, by modifying a sound script which defines the "sound zones" in the map, for Wwise to know where to play a specific soundscape).