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


HAPPY CAMP RS, te (043761)
Temp F Earliest 10% 20% 30% 40% 50% 60% 70% 80% 90% Latest
36.5 08/10 09/10 09/16 09/21 09/26 09/28 10/01 10/05 10/15 10/23 11/03
32.5 08/21 10/03 10/06 10/11 10/17 10/20 10/24 10/29 11/09 11/20 12/22
28.5 09/30 10/16 10/21 10/27 11/05 11/13 11/19 11/23 11/28 12/13 **/**
24.5 10/21 11/10 11/17 11/23 11/29 12/05 12/09 12/22 **/** **/** **/**
20.5 10/23 11/23 12/13 12/25 **/** **/** **/** **/** **/** **/** **/**
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