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


FT KLAMATH 7 SW, ta (353022)
Temp F Earliest 10% 20% 30% 40% 50% 60% 70% 80% 90% Latest
36.5 07/31 07/31 07/31 08/01 08/03 08/03 08/04 08/07 08/19 09/01 09/03
32.5 08/01 08/02 08/03 08/08 08/14 08/15 08/19 08/24 08/29 09/03 09/03
28.5 08/03 08/10 08/21 08/25 08/26 08/28 09/01 09/10 09/18 09/20 09/20
24.5 08/27 09/07 09/19 09/20 09/20 09/21 09/22 09/27 10/04 10/10 10/14
20.5 09/24 09/26 09/28 10/03 10/11 10/15 10/19 10/22 10/27 11/13 11/24
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