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


UPPER OLALLA 1N, ta (358788)
Temp F Earliest 10% 20% 30% 40% 50% 60% 70% 80% 90% Latest
36.5 07/31 07/31 12/65 08/02 08/04 08/11 08/22 08/26 08/28 09/03 09/05
32.5 08/02 08/03 12/65 08/19 08/23 08/27 08/31 09/01 09/04 09/07 09/09
28.5 08/15 08/28 12/65 09/02 09/03 09/07 09/09 09/09 09/11 09/15 10/05
24.5 08/15 09/07 12/65 09/12 09/18 09/21 09/22 09/22 09/24 10/14 11/04
20.5 09/12 09/15 12/65 10/02 10/07 10/10 10/17 10/18 10/21 11/04 11/05
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