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


ROME 2 NW, OREGON (357310)
Temp F Earliest 10% 20% 30% 40% 50% 60% 70% 80% 90% Latest
36.5 08/06 08/20 08/26 08/30 08/31 09/03 09/06 09/08 09/10 09/11 09/20
32.5 08/07 08/30 09/02 09/08 09/09 09/11 09/12 09/13 09/18 09/22 10/05
28.5 09/06 09/12 09/15 09/17 09/20 09/22 09/23 09/27 10/05 10/08 10/17
24.5 09/14 09/19 09/23 09/25 10/03 10/06 10/10 10/12 10/17 10/24 10/30
20.5 09/17 10/05 10/09 10/13 10/17 10/18 10/23 10/27 11/01 11/08 11/17
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