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


BOISE 7 N, IDAHO (101017)
Temp F Earliest 90% 80% 70% 60% 50% 40% 30% 20% 10% Latest
36.5 05/17 05/24 05/29 05/31 06/08 06/09 06/13 06/16 06/17 06/21 07/08
32.5 04/19 05/03 05/09 05/13 05/18 05/22 05/26 05/29 06/01 06/08 06/26
28.5 03/13 04/07 04/14 04/19 04/23 05/02 05/04 05/07 05/12 05/18 06/07
24.5 01/22 03/04 03/13 03/29 03/31 04/02 04/09 04/13 04/15 04/21 05/10
20.5 01/22 02/07 02/14 02/18 03/01 03/04 03/11 03/14 03/23 04/07 05/02
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