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


GIBBON sta, (353250)
Temp F Earliest 10% 20% 30% 40% 50% 60% 70% 80% 90% Latest
36.5 07/31 08/08 12/65 08/23 08/25 08/28 09/01 09/05 09/12 09/18 09/18
32.5 08/26 08/30 12/65 09/10 09/12 09/15 09/18 09/21 09/25 09/27 09/27
28.5 09/15 09/16 12/65 09/18 09/21 09/24 09/27 10/01 10/04 10/15 10/25
24.5 09/30 10/04 12/65 10/16 10/19 10/23 10/25 10/26 10/31 11/09 11/13
20.5 10/17 10/22 12/65 10/27 10/28 11/02 11/08 11/11 11/13 11/14 11/15
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