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


DUNSMUIR TRTMNT PLT, (042574)
Temp F Earliest 90% 80% 70% 60% 50% 40% 30% 20% 10% Latest
36.5 04/15 04/24 05/02 05/06 05/10 05/11 05/18 05/23 05/29 06/04 06/19
32.5 03/30 04/05 04/11 04/15 04/18 04/19 04/20 05/01 05/08 05/17 05/28
28.5 02/08 03/05 03/16 03/24 03/29 04/07 04/09 04/12 04/16 04/22 05/22
24.5 **/** 01/19 01/31 02/06 02/11 02/17 02/27 03/12 03/19 04/08 04/20
20.5 **/** **/** **/** **/** **/** 01/08 01/14 01/31 02/08 02/18 03/12
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