A fast-moving clipper system brought a brief, but robust snowfall to the Chicago area Christmas evening delivering 1 to 3 inches of snow across the area. The snow depth officially reached 1 inch at both Midway and O’Hare by 9pm giving the city its first white Christmas since 2010. After a cold Thursday with highs in the lower 20s and some passing flurries, the cold will temporarily relax its grip on the city with readings soaring to around 40 degrees on Saturday the warmest reading here since a balmy 56 degree high on December 4. The warm-up will be short lived as a new arctic surge hits the city Sunday sending the mercury tumbling to subzero levels by Monday morning for the fifth time this month, the most in December since 2000 when 10 subzero days were recorded. Highs Monday will remain in the single digits with more subzero readings Tuesday morning.