TONIGHT…Partly cloudy. Cold with lows around 5 above. West winds 10 to 15 mph with gusts up to 25 mph. Wind chill values as low as 8 below after midnight. CHRISTMAS DAY…Sunny, cold with highs around 19. West winds around 10 mph with gusts up to 20 mph. Wind chill values as low as 10 below in the morning. SUNDAY NIGHT…Mostly clear in the evening, then becoming mostly cloudy. Cold with lows around 8 above. Southwest winds around 5 mph.