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


LA GRANDE, OREGON (354622)
Temp F Earliest 10% 20% 30% 40% 50% 60% 70% 80% 90% Latest
36.5 08/18 08/26 09/03 09/09 09/13 09/15 09/20 09/21 09/22 10/03 10/07
32.5 08/28 09/14 09/20 09/22 09/23 09/24 09/28 10/04 10/05 10/08 10/27
28.5 09/14 09/21 09/26 10/02 10/06 10/10 10/12 10/15 10/19 10/24 10/30
24.5 09/25 10/07 10/11 10/16 10/19 10/22 10/30 11/03 11/05 11/11 12/09
20.5 10/06 10/16 10/26 11/01 11/04 11/08 11/13 11/19 11/27 12/02 **/**
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