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


TRAIL 12 NE, : (358588)
Temp F Earliest 10% 20% 30% 40% 50% 60% 70% 80% 90% Latest
36.5 08/16 08/24 08/26 09/01 09/04 09/11 09/16 09/18 09/20 09/29 10/03
32.5 09/05 09/16 09/19 09/21 09/21 09/22 09/22 09/29 10/04 10/11 10/15
28.5 09/17 09/28 10/02 10/08 10/10 10/18 10/21 11/14 11/18 11/26 12/21
24.5 10/24 10/29 11/03 11/04 11/14 11/18 11/25 12/03 12/17 **/** **/**
20.5 10/26 11/03 11/15 11/16 12/06 12/14 12/20 12/26 **/** **/** **/**
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