https://www.nps.gov/yose/planyourvisit/conditions.htm
CONDITIONS
Winter storm forecast: be prepared for road closures and carry tire chains
Road closures (including Tioga Road and/or Glacier Point Road) and tire chain requirements are possible starting October 13. Call 209/372-0200 (then 1, 1) for current road status within Yosemite National Park.
Tioga Road (Hwy 120 through the park) temporarily closing on Monday at 2 pm
Tioga Road (continuation of Highway 120 through the park) will temporarily close on Monday, October 13, at 2 pm due to a forecast of snow. Call 209/372-0200 (then 1, 1) to check road conditions in the park.more
Glacier Point Road temporarily closing on Sunday (Oct. 12) at 8 pm
Glacier Point Road will temporarily close on Sunday, October 12, at 8 pm due to a forecast of snow. Call 209/372-0200 (then 1, 1) to check road conditions in the park.more
WEATHER
https://forecast.weather.gov/MapClick.php?lon=-119.61292&lat=37.73639#.WX_I0oVlDYV
This is for the valley, elevation 4000 ft. Tioga Pass is 9,945 ft.
Tonight
Increasing clouds, with a low around 34. Northeast wind around 5 mph.
Columbus Day
Rain likely. Cloudy, with a high near 61. West northwest wind 5 to 15 mph becoming south in the afternoon. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday Night
Rain. The rain could be heavy at times. Low around 30. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts between 1 and 2 inches possible.
Tuesday
Rain before 2pm, then showers and possibly a thunderstorm after 2pm. High near 54. South southwest wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Tuesday Night
Rain likely before 2am, then a chance of rain and snow. Mostly cloudy, with a low around 23. South southwest wind 5 to 10 mph becoming east after midnight. Chance of precipitation is 60%. Little or no snow accumulation expected.
Wednesday
Mostly sunny, with a high near 60. Light and variable wind becoming west 5 to 10 mph in the afternoon.
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