The 41-year-old was taken to hospital on Friday after falling in a race that was then cancelled due to the weather conditions.
The 2010 gold medallist said afterwards that her dream of an Olympic comeback was not over.
"Unfortunately I won't be able to race today...wishing all my teammates a great race," Vonn posted on Instagram.
"Thank you for all of the love and support I have received. Means the world to me. Doing my best right now..."
The first training run for the February 8 women's Olympic downhill is scheduled for Wednesday.
Vonn had been on the start list for Saturday's super-G with bib number 15.