CALGARY — Clouds clear Sunday night leading into a sunny and below seasonal Monday. Warmer air moves in after that bringing milder conditions closer to the long term average with periods of sun and cloud. A chance of flurries or light snow begins Wednesday night, marking the beginning of a major cool down. Temperatures throughout Thursday drop steadily, reaching the minus mid-twenties overnight. That downward trend continues through Boxing Day with morning temperatures approaching -30 C. Here’s the five day: Monday: Tuesday: Wednesday: Thursday: Friday: