LITTLE COTTONWOOD CANYON, Utah — At the base of a slope that at this time of year usually tests the skills of mountain bikers, roughly 60 skiers and snowboarders, hoping to get first tracks on the mountain, waited for the 8 a.m. opening of the tram at Snowbird resort.

These were not bitter-enders hoping to eke out runs on a thin swatch of snow. At this northern Utah resort, it is still winter. There is hardly a bare spot on the mountain. Piles of snow line the vast parking lot. With much of the country in the grip of record-high temperatures, it was 31 degrees here Friday morning. Snowbird has announced that it will be open for snow sports three days a week until July 4. And it could stay open even later.

An unusually heavy winter snowfall and a cold, wet spring have resulted in a record snowpack in much of the mountain regions of the West. Bob Bonar, the general manager at Snowbird, said the mountain received more than 775 inches of snow this season, well above its average of 500.

“We even got 20 inches of powder over Memorial Day weekend, and our current average base is more than 15 feet,” Bonar said. “The holiday may not even be the end. We may stay open a few weekends longer if the snow stays good.”