Sure, it's weather dependent. But here's what we have so far for opening dates. Know of any more? Post 'em when you know 'em.
For California:
11/3: Rose
11/11: Mammoth
11/18: Boreal, Heavenly, Northstar
11/19: Snow Summit
11/22: Palisades
11/23: Snow Valley
11/25: Bear Valley, Big Bear, Sugar Bowl
12/2: Kirkwood
12/8: Diamond Peak
12/9: Tahoe Donner
For Colorado:
10/21: Keystone
10/22: Arapahoe Basin
10/29: Loveland
11/4: Wolf Creek
11/11: Breckenridge, Vail
11/17: Winter Park
11/18: Eldora
11/20: Purgatory
11/21: Copper
11/23: Beaver Creek, Crested Butte
11/24: Aspen Snowmass, Telluride
11/26: Steamboat
12/3: Powderhorn
12/7: Cooper
12/9: Granby Ranch
12/10: Monarch, Howelsen, Echo
12/17: Sunlight
12/24: Silverton
For New Hampshire:
11/18: Wildcat
11/18: Sunapee
11/26: Bretton Woods
12/2: Attitash, Loon, Crotched
12/3: Cannon, Pat's Peak
12/4: Waterville
12/9: Ragged
12/10: Gunstock
12/11: Canmore
12/16: King Pine
12/17: Tenney
12/23: Dartmouth Skiway
12/25: Whaleback
1/13: Black
For Utah:
11/18: Brian Head, Park City, Solitude
11/23: Alta
11/30: Snowbird
12/3: Brighton, Deer Valley
12/11: Nordic Valley
12/16: Eagle Point
12/17: Powder Mountain
12/22: Beaver Mountain
For Vermont:
11/11: Killington, Mount Snow
11/18: Stowe
11/19: Stratton, Okemo
11/23: Sugarbush
11/26: Jay Peak
12/3: Smugglers Notch
12/9: Bromley
12/10: Bolton, Mad River
12/17: Pico
12/23: Saskadena Six
12/25: Magic
1/11: Burke
For California:
11/3: Rose
11/11: Mammoth
11/18: Boreal, Heavenly, Northstar
11/19: Snow Summit
11/22: Palisades
11/23: Snow Valley
11/25: Bear Valley, Big Bear, Sugar Bowl
12/2: Kirkwood
12/8: Diamond Peak
12/9: Tahoe Donner
For Colorado:
10/21: Keystone
10/22: Arapahoe Basin
10/29: Loveland
11/4: Wolf Creek
11/11: Breckenridge, Vail
11/17: Winter Park
11/18: Eldora
11/20: Purgatory
11/21: Copper
11/23: Beaver Creek, Crested Butte
11/24: Aspen Snowmass, Telluride
11/26: Steamboat
12/3: Powderhorn
12/7: Cooper
12/9: Granby Ranch
12/10: Monarch, Howelsen, Echo
12/17: Sunlight
12/24: Silverton
For New Hampshire:
11/18: Wildcat
11/18: Sunapee
11/26: Bretton Woods
12/2: Attitash, Loon, Crotched
12/3: Cannon, Pat's Peak
12/4: Waterville
12/9: Ragged
12/10: Gunstock
12/11: Canmore
12/16: King Pine
12/17: Tenney
12/23: Dartmouth Skiway
12/25: Whaleback
1/13: Black
For Utah:
11/18: Brian Head, Park City, Solitude
11/23: Alta
11/30: Snowbird
12/3: Brighton, Deer Valley
12/11: Nordic Valley
12/16: Eagle Point
12/17: Powder Mountain
12/22: Beaver Mountain
For Vermont:
11/11: Killington, Mount Snow
11/18: Stowe
11/19: Stratton, Okemo
11/23: Sugarbush
11/26: Jay Peak
12/3: Smugglers Notch
12/9: Bromley
12/10: Bolton, Mad River
12/17: Pico
12/23: Saskadena Six
12/25: Magic
1/11: Burke