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


JULIAN CDF, c (044412)
Temp F Earliest 90% 80% 70% 60% 50% 40% 30% 20% 10% Latest
36.5 04/23 06/21 05/02 06/29 05/15 05/21 05/27 07/11 06/02 07/21 06/16
32.5 03/13 06/02 03/26 06/13 04/11 04/13 04/16 06/27 04/25 07/04 05/12
28.5 01/23 05/05 03/05 05/16 03/13 03/16 03/25 06/05 04/12 06/14 04/23
24.5 **/** 04/18 01/14 05/02 02/05 02/14 02/20 05/18 03/09 05/28 04/12
20.5 **/** 03/25 **/** 04/08 **/** **/** **/** 04/29 02/14 05/13 03/16
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