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


NESPELEM 2 S, WASHINGTON (455832)
Temp F Earliest 90% 80% 70% 60% 50% 40% 30% 20% 10% Latest
36.5 05/09 05/29 06/09 06/14 06/18 06/25 06/29 06/30 07/05 07/11 07/23
32.5 04/11 05/08 05/16 05/19 05/24 05/29 06/04 06/10 06/18 06/28 07/07
28.5 03/20 04/11 04/30 05/04 05/05 05/11 05/14 05/20 05/24 05/28 06/23
24.5 02/24 03/14 03/25 04/03 04/06 04/09 04/20 04/29 05/04 05/13 05/19
20.5 01/18 02/04 03/04 03/10 03/13 03/14 03/16 03/24 04/06 04/28 05/15
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