Five more Montana ski areas popped open in the past few days for the 2012-13 season. Just before the weekend, the weather flip-flopped, dropping from balmier temperatures to true winter. A weekend of pelting snow pleased skiers and riders with soft corduroy and powder, and this upcoming week holds a hefty forecast of more snow. You can also still get discount cards for lift tickets at the ski areas.

Whitefish Mountain Resort started up skiing Saturday on the resort’s backside, but by the end of the day, the ski patrol added on more runs. Skiers and riders were treated to blower powder and buttery groomers for the first day of the season.

Check out opening day at Whitefish in these B-Roll clips:

Whitefish still has its Frequent Skier Cards available. The cards, which must be bought by Dec. 24, cost $50. The cardholder gets a discount on lift tickets. Adults get a $23 discount on lift tickets, making the card pay off in three days. Frequent Skier Cards are available for teens, juniors, and seniors, too.

With a strong start, Moonlight Basin ran lifts on Friday for season passholders and then opened for the public on Saturday for powder skiing. Conditions permitted the ski area to even open up Headwaters wall-to-wall except for two drops. The resort also inaugurated its new Bag Jump.

Moonlight has its Value Cards on sale through Dec. 16 for $59. The cards include the first day of skiing free and seven free days April 8-14. Cardholders get $10 off lift tickets on other days and can ski for $40 on the second Sunday of every month.

Bridger Bowl opened Friday, too, with four of its six chairlifts operating, but added Schlasman’s on Saturday for access to the powder playground. Take a look at what opening day looked like at Bridger:

Bridger’s Legend Cards are still available through Dec. 24. They cost $40 and give adults a $9 discount on lift tickets. Cardholders can also have two people ski for $49 through Dec. 16 and ski free on Bridger’s birthday. Juniors can get their own Legend Card.

Showdown Montana ran three of four lifts on Friday’s opening day and followed the opener with a powder day on Saturday. Beginners got to ride the new 400-foot conveyer lift. Showdown will operate Fridays through Sundays until Dec. 21 when it starts daily operation.

Showdown’s Five-Time and Ten-Time passes are at full price now, but they still get skiers and riders on the hill for less than ticket-window prices. The passes cost $185 for the adult Five-Time and $385 for the adult Ten-Time. Special passes are sold for juniors and seniors. There was 10 inches of powder for Saturday's skiers.

Lost Trail Powder Mountain started up last Thursday with three lifts running. The ski area is scheduled to open Thursdays through Sundays and daily Dec. 23-Jan. 3 for the holidays.

Lost Trail’s 10-day passes are available, but at regular rates. The passes still offer a $2 discount on lift tickets, and they are transferable, so you can share them with family or friends.

Find details on each resort’s discount cards here: Whitefish, Moonlight Basin, Bridger Bowl, Showdown, Lost Trail.