Spring 'Freeze' Probabilities (Jan 1 - Jul 31)


OLD FAITHFUL, WYOMING (486845)
Temp F Earliest 90% 80% 70% 60% 50% 40% 30% 20% 10% Latest
36.5 07/16 07/19 07/22 07/25 07/26 07/27 07/28 07/29 07/30 07/30 07/30
32.5 06/20 06/20 06/27 07/02 07/09 07/16 07/18 07/21 07/25 07/27 07/29
28.5 06/02 06/09 06/16 06/20 06/21 06/25 06/27 06/29 07/06 07/18 07/29
24.5 05/09 05/12 05/13 05/20 05/27 06/01 06/06 06/09 06/14 06/26 07/16
20.5 04/23 04/30 05/03 05/09 05/11 05/12 05/16 05/20 05/23 06/03 06/27
Graphic Output
 Earliest - Earliest 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 Jan. 1 to July 31 
                  period or that there was insufficient data to determine a 
                  date.

xx% - Percent probability that a minimum temperature below the threshold will occur on or after 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 never been a year when the minimum temperature went below the threshold temperature during the Jan. 1 to July 31 period or insufficient data to determine a date. 07/30 means the minimum temperature can go below the threshold temperature any day during the Jan. 1 to July 31 period.

Western Regional Climate Center, wrcc@dri.edu