Related Clues:

• You can't ski without it
• What might cancel classes
• John __, pioneer of epidemiology known for his work on cholera in London
• White winter coating
• Powder at Park City
• Surface for sledding
• Blanket that isn't warm?
• Not exactly a warm blanket
• Olaf's makeup, in 'Frozen'
• It falls in ice crystals
• Weather seen on a winter postcard
• It falls in flurries
• Winter delight
• Reason for a school day off
• Mother Nature's blanket