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


LAKE YELLOWSTONE, WYOMING (485345)
Temp F Earliest 10% 20% 30% 40% 50% 60% 70% 80% 90% Latest
36.5 07/31 07/31 07/31 08/01 08/02 08/03 08/04 08/06 08/09 08/13 08/24
32.5 07/31 08/01 08/02 08/04 08/08 08/11 08/17 08/21 08/28 09/01 09/05
28.5 07/31 08/06 08/12 08/20 08/24 08/29 08/31 09/02 09/05 09/13 09/23
24.5 08/09 08/26 08/31 09/08 09/09 09/11 09/13 09/19 09/22 09/22 10/16
20.5 08/26 09/09 09/13 09/15 09/20 09/22 09/27 10/02 10/05 10/11 10/27
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