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


KLAMATH FALLS 2 SSW, OREGON (354506)
Temp F Earliest 10% 20% 30% 40% 50% 60% 70% 80% 90% Latest
36.5 08/01 08/15 08/20 08/31 09/06 09/09 09/12 09/15 09/20 09/27 10/16
32.5 08/01 08/30 09/08 09/13 09/19 09/21 09/23 10/01 10/03 10/10 10/23
28.5 08/30 09/20 09/28 10/03 10/06 10/09 10/15 10/17 10/21 10/27 11/11
24.5 09/13 10/07 10/14 10/18 10/22 10/27 10/30 11/05 11/09 11/14 11/25
20.5 09/24 10/21 10/28 11/02 11/08 11/11 11/14 11/18 11/25 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