Bears can smell food in and break into vehicle trunks. Visitors need to store all food, ice chests, and odorous items in metal food storage boxes or hard-sided cabins. Once bears become conditioned to human food, they become unnaturally aggressive and must be killed. The weather in the park has ranged from mostly sunny to overcast. In Tuolumne Meadows, daytime highs have been in the 50s, with overnight lows near freezing.
Camping is permitted only in designated campgrounds.
There are no RV hookups in park campgrounds. In Yosemite Valley , Upper Pines, Lower Pines, and North Pines campgrounds are open, reservations are required. Upper and Lower River Campgrounds were destroyed by flooding in January 1997 and are permanently closed. All other campgrounds remain closed. The National Park Reservation Service is taking campground reservations for the period ending October 14.