+1 to everything being closed.
Don't know how fast you are planning on going but you'll be carrying shoulder season/winter weight gear and many days of food.
The following average weather info may be helpful. Although, you may get zero inches of snow. Or you may get 5 feet. Really no way to tell.
The median day that Tioga Road in Yosemite closes due to snow is November 12. Half the time it closes in late October/earlier in November. And half the time, it closes later in November or December. This is not the first day with snow, just the day that they stop plowing the road for the winter.
https://www.nps.gov/yose/planyourvisit/seasonal.htm
Sonora and Ebbetts Passes also close about this same time.
Carson Pass is open year round but is very snowy. Kirkwood Ski Resort is near Carson. The average Oct. and Nov. snow fall for Kirkwood is 66".
https://snowfall.weatherdb.com/l/135...ood-California
Donner Summit is "only" 7075 feet in elevation. I-80 also stays open all winter.
The average date that the snow becomes a "permanent" fixture on the ground (until April, May or June) is November 19. The earliest date is Oct. 24.
http://www.sierracollege.edu/ejourna...tesummary.html
From Wiki:
Winter
weather at Donner Pass can be brutal. At an average of 411.5 inches (10.45 m) per year, Donner Pass is one of the snowiest places in the United States. Four times since 1880 total snowfall at Donner Summit has exceeded 775 inches (19.69 m) and topped 800 inches (20.32 m) in both 1938 and 1952.
[14] To take advantage of the heavy snows, the Boreal Ski Resort was built to the north. Ski resorts in the
Lake Tahoe area report an average of 300 to 500 inches (7.62 to 12.70 m) of snowfall per season. Winds in the pass can also become extreme and wind gusts in excess of 100 miles per hour (160 km/h) are common during
winter storms. Winter temperatures in the area drop below zero several times each year; the all-time record low for California of −45 °F (−42.8 °C) was recorded at
Boca (east of Truckee) in January 1937.
The winter of 1846–47 was especially severe, and this is generally cited as the single most important factor in the disaster of the
Donner Party. In the winter of 2010–11, over 700 inches (17.78 m) fell by May 23. Snow depth peaked in early April 2011 with over 250 inches (20.83 ft; 6.35 m) of snow on the ground.
[15]"
Lassen National Park gets seriously mega snow.
"Annual snowfall at Lassen National Park is epic, the most recorded in California. At the Lake Helen snow survey site, elevation 8,200 feet, an average annual 660 inches (55 feet) of snow buries the area each winter. Some years more than 1,000 inches (83 feet) of snowfall has been measured there. Despite Lassen’s relatively modest elevation, the heavy snowfall sustains 14 permanent patches of snow in the park.
Lassen Volcanic National Park is the least visited of California’s national parks. Due to deep snow cover the road through the park often isn’t plowed until late June or early July and is closed again by late October."
http://www.tahoedailytribune.com/art...NITY/101019946
It is a myth that all the snow in California is on Forester Pass and above 10,000 feet.