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


VANCOUVER INTERSTATE BRG, (458778)
Temp F Earliest 10% 20% 30% 40% 50% 60% 70% 80% 90% Latest
36.5 08/18 09/17 12/65 09/29 10/05 10/10 10/15 10/21 10/26 11/01 11/29
32.5 09/13 10/05 12/65 10/17 10/26 11/01 11/06 11/14 11/20 11/27 12/23
28.5 09/13 10/25 12/65 11/09 11/14 11/19 11/23 12/04 12/09 12/22 **/**
24.5 10/09 11/12 12/65 12/02 12/09 12/13 12/17 12/25 **/** **/** **/**
20.5 10/31 11/24 12/65 12/15 12/27 **/** **/** **/** **/** **/** **/**
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