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


OAK KNOLL, CALIFORNIA (046328)
Temp F Earliest 90% 80% 70% 60% 50% 40% 30% 20% 10% Latest
36.5 03/10 03/18 12/65 04/06 04/15 04/19 04/22 04/27 05/02 05/05 05/21
32.5 01/18 02/11 12/65 03/05 03/13 03/19 03/27 04/03 04/07 04/17 04/20
28.5 **/** **/** 12/65 01/22 02/05 02/15 02/29 03/04 03/12 03/18 04/10
24.5 **/** **/** 12/65 **/** **/** 01/04 01/10 01/19 01/23 02/13 03/12
20.5 **/** **/** 12/65 **/** **/** **/** **/** **/** **/** 01/13 02/08
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