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


COTTAGE GROVE 1 NNE, (351897)
Temp F Earliest 10% 20% 30% 40% 50% 60% 70% 80% 90% Latest
36.5 08/05 08/20 08/29 09/07 09/12 09/20 09/25 10/02 10/10 10/18 11/04
32.5 08/20 09/16 09/22 09/26 10/04 10/16 10/21 10/27 11/04 11/12 12/01
28.5 09/12 10/10 10/18 11/01 11/09 11/15 11/22 11/29 12/08 12/23 **/**
24.5 09/25 11/02 11/15 11/23 12/07 12/13 12/18 **/** **/** **/** **/**
20.5 10/08 11/14 11/27 12/16 12/31 **/** **/** **/** **/** **/** **/**
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