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


PENDLETON E OR RGNL AP, (356546)
Temp F Earliest 90% 80% 70% 60% 50% 40% 30% 20% 10% Latest
36.5 03/19 04/19 04/24 04/29 05/03 05/06 05/10 05/14 05/21 05/27 06/10
32.5 03/06 03/25 04/01 04/06 04/13 04/16 04/20 04/26 05/03 05/09 05/21
28.5 01/29 02/20 03/04 03/12 03/14 03/24 03/30 04/06 04/12 04/18 05/02
24.5 01/10 01/29 02/08 02/17 02/25 03/02 03/05 03/11 03/24 04/01 04/19
20.5 **/** **/** 01/10 01/24 02/02 02/09 02/14 02/25 03/04 03/11 04/02
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