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


PROSSER st, (456763)
Temp F Earliest 10% 20% 30% 40% 50% 60% 70% 80% 90% Latest
36.5 07/31 09/10 09/16 09/20 09/22 09/24 09/26 09/30 10/05 10/08 10/22
32.5 09/12 09/21 09/27 10/02 10/06 10/08 10/11 10/15 10/18 10/26 11/07
28.5 09/13 10/03 10/13 10/17 10/20 10/24 10/26 10/29 11/01 11/04 11/07
24.5 09/24 10/16 10/21 10/29 10/31 11/02 11/04 11/07 11/12 11/22 12/08
20.5 09/24 10/29 11/03 11/10 11/13 11/19 11/23 12/01 12/09 12/29 **/**
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