The National Park Service says all areas that had previously been closed, including the Tuolumne Grove of Giant Sequoias, and hiking trails around the Hetch Hetchy reservoir, are again open to the public.
The reopening comes with cautions. Visitors are urged to be aware of risks, which include hazardous trees and potential rock falls.
Fire restrictions that had been imposed last summer and fall have been lifted. But the continuing drought could cause those restrictions to be restored later in the year.
The Rim Fire started in mid-August. It burned about 77,000 acres within Yosemite, and total of 255,000 acres.
An estimated 60,000 people will take part in California's biggest one day volunteer effort on Sept. 20, and anyone can participate.
El Niño is not expected to end the California drought but ‘atmospheric rivers’ might help.
Forecasters say the chances are diminishing that El Niño will bring rain to California.
The Sacramento Municipal Utility District's shade tree program has been around for 25 years. In spite of the drought, the utility says it will continue to fund the program for at least another two years because of the benefits trees provide.
Environmental groups say the recent California Legislative session was a big win for coastal protection, clean water among other issues.