Not all campgrounds are closed in Lake Tahoe in the fall, and fortunately there are a number of options that will give you some colorful backdrops.
Desolation Wilderness offers fantastic dispersed backcountry tent camping near South Lake Tahoe. Permits are required year-round with quotas in effect during summer.
Granite Chief Wilderness is over 26,000 acres of beautiful wilderness area near Tahoe City. Dispersed backcountry tent camping is available. Permits not required.
North Tahoe high-altitude wilderness area with plenty of dispersed backcountry tent camping. Over 31,000 acres. No permits required.