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


PULLMAN 2 NW, WASHINGTON (456789)
Temp F Earliest 90% 80% 70% 60% 50% 40% 30% 20% 10% Latest
36.5 05/05 05/19 05/26 06/01 06/07 06/15 06/21 06/29 07/07 07/18 07/29
32.5 04/06 04/21 05/02 05/07 05/11 05/14 05/16 05/20 05/23 05/30 06/17
28.5 03/14 03/19 03/30 04/04 04/10 04/16 04/21 04/28 05/02 05/08 05/21
24.5 01/31 02/20 03/03 03/06 03/12 03/15 03/25 03/28 04/07 04/19 05/08
20.5 01/04 02/02 02/12 02/20 02/26 03/03 03/07 03/13 03/16 03/27 04/19
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