Fall 'Freeze' Probabilities (Jul. 31 - Dec. 31)


FORT YUKON, ALASKA (503175)
Temp F Earliest 10% 20% 30% 40% 50% 60% 70% 80% 90% Latest
36.5 07/31 08/03 08/08 08/12 08/15 08/18 08/21 08/24 08/27 08/30 09/17
32.5 08/02 08/07 08/12 08/15 08/22 08/29 08/30 09/01 09/06 09/12 09/17
28.5 08/07 08/16 08/22 08/30 09/02 09/05 09/08 09/10 09/14 09/17 09/27
24.5 08/23 08/30 09/05 09/10 09/11 09/14 09/16 09/17 09/20 09/26 10/02
20.5 09/04 09/10 09/15 09/16 09/19 09/22 09/25 09/26 09/30 10/07 10/08
Graphic Output
 Earliest - Earliest date when a minimum temperature below the threshold occurred.
            **/** means there has never been a year when the minimum temperature
                  went below the threshold temperature during the July 31 to 
                  Dec. 31 period or insufficient data to determine a date.
            07/31 means the minimum temperature can go below the threshold 
                  temperature any day during the July 31 to Dec. 31 period.
xx% - Percent probability that a minimum temperature below the threshold will occur on or before the given date. **/** means non-occurrence of the threshold or insufficient data to determine a threshold.
Latest - Latest date when a minimum temperature below the threshold occurred. **/** means there has been a year when the minimum temperature didn't go below the threshold temperature during the July 31 to Dec. 31 period or insufficient data to determine a date.

Western Regional Climate Center, wrcc@dri.edu