Average Temperature Outlook for ANCHORAGE (issued in November 2016) suggests that during Dec-Jan-Feb 2016_17:

There is a 99% chance that the average 3-month temperature will be within the range of 6.2 and 28.5 Deg F,.

There is an approximately equal ( 50.0%) chance that the temperature will be higher than the climatological median* of 17.3 Deg F, and an approximately equal (50.0%) chance that the temperature will be lower than the climatological median*.

*For the climatological reference information, the median statistic is reported. The median value means that during the present climatological reference period (1981-2010), half of the years (50%) temperature was greater than the median and in the other half (50%) less than that.