The valley is closed to visitors due to this expected storm.
Cut n paste from nps.gov
<b>January 06, 2017</b>
All Roads Leading into Yosemite Valley to Close Today at 5:00 pm
All roads leading into Yosemite Valley will close today at 5:00 pm in anticipation of a significant winter storm moving into the region early tomorrow morning, Saturday, January 7, 2017. There will be no visitor services available throughout the storm. Visitors intending to visit Yosemite National Park are highly encouraged to monitor weather reports and check road conditions before departing. These closures are being implemented to ensure the safety of park visitors and employees during the coming storm.
<b>January 04, 2017</b>
Yosemite National Park Expects Significant Precipitation Over the Next Several Days
Yosemite National Park is making preparations for visitor and employee safety in response to weather reports predicting significant precipitation, and possible flooding, over the next several days and through the weekend. The predictions for significant rainfall in Yosemite Valley, well above flood stage on the Merced River, could prompt the park to be closed in the next few days. People planning trips to the park, beginning tomorrow, Thursday January 5, 2017, should make alternate plans if the park does close.
I hope it opens before next week.