It's certainly icy out our way. We went from 50° last week to 15° this week.
The answers to each of these clues contain the word "ice".
-1. a woman's vest-like garment (6)
-2. a word used in many MasterCard commercials (9)
-3. desire to do evil (6)
-4. a steep cliff (9)
-5. details of etiquette (8)
-6. a time when the sun is the greatest distance from the equator (8)
-7. an ornamental molding near the ceiling (7)
-8. give up something for the sake of other considerations (9)
-9. permit (7)
-10. conspicuous (10)
-11. superb (11)