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


WINCHESTER, i (109846)
Temp F Earliest 10% 20% 30% 40% 50% 60% 70% 80% 90% Latest
36.5 07/31 08/02 08/07 08/16 08/22 08/25 08/31 09/02 09/06 09/11 10/03
32.5 08/01 08/13 08/31 09/02 09/09 09/11 09/16 09/21 09/23 10/06 10/17
28.5 08/24 09/07 09/12 09/13 09/19 09/22 09/26 10/03 10/08 10/16 10/29
24.5 09/14 09/16 09/23 09/28 10/06 10/12 10/16 10/25 10/27 10/31 11/19
20.5 09/14 09/28 10/09 10/14 10/23 10/28 11/01 11/06 11/11 11/22 12/04
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