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


DENMARK 1 NNW, OREGON (354721)
Temp F Earliest 10% 20% 30% 40% 50% 60% 70% 80% 90% Latest
36.5 10/24 08/05 10/28 08/20 11/03 11/06 11/10 09/08 12/05 09/15 12/14
32.5 11/21 08/25 12/01 09/07 12/05 12/12 **/** 09/21 **/** 10/03 **/**
28.5 12/19 09/09 **/** 09/19 **/** **/** **/** 10/05 **/** 10/16 **/**
24.5 12/20 09/22 **/** 10/04 **/** **/** **/** 10/23 **/** 11/03 **/**
20.5 12/21 10/05 **/** 10/23 **/** **/** **/** 11/09 **/** 11/24 **/**
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