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


QUINCY sta, (047195)
Temp F Earliest 10% 20% 30% 40% 50% 60% 70% 80% 90% Latest
36.5 07/31 08/01 08/02 08/04 08/08 08/12 08/17 08/26 09/02 09/10 10/06
32.5 07/31 08/09 08/15 08/24 08/28 09/02 09/06 09/09 09/15 09/26 10/17
28.5 08/16 08/30 09/08 09/13 09/19 09/24 09/29 10/04 10/13 10/16 11/19
24.5 08/30 09/18 09/25 10/04 10/13 10/17 10/21 10/26 11/03 11/13 12/06
20.5 08/31 10/05 10/15 10/23 10/29 11/05 11/11 11/22 11/27 12/04 12/28
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