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


FOSTER DAM, o (353047)
Temp F Earliest 10% 20% 30% 40% 50% 60% 70% 80% 90% Latest
36.5 08/18 09/15 09/22 09/26 10/03 10/07 10/13 10/16 10/19 10/31 11/08
32.5 09/22 10/01 10/08 10/16 10/22 10/25 10/28 10/31 11/08 11/22 12/02
28.5 10/09 10/28 11/01 11/07 11/10 11/18 11/24 11/30 12/06 12/19 12/29
24.5 10/29 11/07 11/22 12/02 12/06 12/19 **/** **/** **/** **/** **/**
20.5 10/31 12/01 12/14 12/20 **/** **/** **/** **/** **/** **/** **/**
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