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


KENNEWICK, WASHINGTON (454154)
Temp F Earliest 10% 20% 30% 40% 50% 60% 70% 80% 90% Latest
36.5 09/10 09/19 09/25 09/28 10/03 10/07 10/10 10/14 10/17 10/22 11/08
32.5 09/12 09/26 10/04 10/10 10/14 10/17 10/21 10/24 10/30 11/04 11/19
28.5 09/13 10/11 10/17 10/22 10/30 11/01 11/05 11/11 11/18 11/25 **/**
24.5 09/24 10/22 10/29 11/02 11/08 11/14 11/21 11/25 12/05 12/12 **/**
20.5 10/25 11/05 11/14 11/20 11/26 12/05 12/09 12/16 12/23 **/** **/**
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