Average Temperature Outlook for CLE ELUM (issued in October 2016) suggests that during Nov-Dec-Jan 2016_17:

There is a 99% chance that the average 3-month temperature will be within the range of 24.0 and 36.8 Deg F,.

There is an approximately equal ( 51.0%) chance that the temperature will be higher than the climatological median* of 30.4 Deg F, and an approximately equal (49.0%) 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.