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


OLGA 2 SE, WASHINGTON (456096)
Temp F Earliest 90% 80% 70% 60% 50% 40% 30% 20% 10% Latest
36.5 03/08 04/04 04/09 04/17 04/21 04/25 04/29 05/02 05/07 05/12 05/27
32.5 01/08 02/25 03/05 03/12 03/20 03/25 03/30 04/05 04/09 04/18 05/08
28.5 **/** **/** 01/16 02/01 02/08 02/15 02/23 02/29 03/06 03/17 04/01
24.5 **/** **/** **/** **/** 01/08 01/21 01/31 02/05 02/14 03/02 03/28
20.5 **/** **/** **/** **/** **/** 01/05 01/20 01/30 02/03 02/16 03/28
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