Recent storms prompted the resort to extend daily skiing until April 6. Bogus officials earlier announced it would close on March 30.
"It's simply a matter of a whole lot of snow in a short amount of time, and it looks like more is coming," Bogus president Alan Moore said Thursday.
Bogus Basin has received 5 inches of snow in the past 72 hours, as of Friday morning.
The "End of Season" party, though now misnamed, will still happen on Sunday, including a hunt for ribbons and flowers on the slopes redeemable for prizes at the lodge, a live band, and discounted $25 adult lift tickets.
On Monday, lift tickets will go back to $39, which is the standard price for an adult ticket during spring.
Other ski resorts are reported big storms Wednesday night with more on the way. Tamarack Resort is predicting up to 2 feet of new snow by Sunday. The resort reported 10 inches of new snow Friday morning, and 17 inches in the previous 48 hours.
Brundage Mountain is reporting 9 inches in the past 24 hours. In an email Friday morning, Brundage officials said the resort will open for skiing and riding the weekend of April 12-13. Brundage previously was scheduled to end its season Sunday, April 6. The mountain will be closed Monday, April 7 through Friday, April 11.
The weather forecast calls for between 1 and 2 feet of new snow this weekend in some areas of Idaho's high country.