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


WASCO stat, (359068)
Temp F Earliest 10% 20% 30% 40% 50% 60% 70% 80% 90% Latest
36.5 09/07 09/12 09/20 09/22 09/24 09/26 09/30 10/06 10/13 10/20 10/26
32.5 09/12 09/26 09/29 10/06 10/09 10/16 10/18 10/23 10/29 11/06 11/18
28.5 09/13 10/06 10/14 10/18 10/26 10/30 11/01 11/07 11/12 11/29 **/**
24.5 10/01 10/28 10/29 11/01 11/05 11/12 11/16 11/24 12/07 12/14 **/**
20.5 10/19 10/31 11/03 11/13 11/27 12/07 12/19 12/26 **/** **/** **/**
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