I'd like to get rid of this effect.

http://postimg.org/gallery/2j5pg535w/8242f819/

Is this part of the precipitation shaders? What would be the recommended setting to remove it?

Sorry I had to create a new thread. Couldn't find the Oblivion Reloaded thread.

Set EnableSnowAccumulation to 0 in the OblivionReloaded.ini (in the OBSE\Plugins folder).