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


WALLACE, IDAHO (109493)
Temp F Earliest 10% 20% 30% 40% 50% 60% 70% 80% 90% Latest
36.5 07/31 08/13 08/22 08/28 08/30 09/01 09/06 09/08 09/13 09/19 10/14
32.5 08/13 09/05 09/08 09/12 09/17 09/19 09/20 09/22 09/26 10/10 11/04
28.5 09/07 09/18 09/21 09/24 09/29 10/06 10/08 10/16 10/22 10/29 11/05
24.5 09/24 10/12 10/18 10/23 10/26 10/30 11/01 11/05 11/11 11/18 11/30
20.5 09/24 10/26 11/01 11/05 11/09 11/11 11/14 11/21 11/29 12/06 **/**
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