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


SPOKANE st, (457933)
Temp F Earliest 10% 20% 30% 40% 50% 60% 70% 80% 90% Latest
36.5 08/31 09/08 09/13 09/15 09/20 09/22 09/27 10/01 10/03 10/16 10/19
32.5 08/31 09/17 09/23 10/01 10/03 10/05 10/09 10/13 10/18 10/22 10/30
28.5 10/04 10/05 10/14 10/18 10/24 10/26 10/27 10/31 11/03 11/14 11/26
24.5 10/06 10/28 11/01 11/05 11/08 11/13 11/16 11/17 11/20 11/30 12/08
20.5 10/28 11/08 11/13 11/16 11/19 11/21 11/28 12/07 12/17 12/23 12/27
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