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


MC KENZIE BRG RS, st (355362)
Temp F Earliest 90% 80% 70% 60% 50% 40% 30% 20% 10% Latest
36.5 05/13 06/02 06/09 06/23 06/26 06/29 06/30 07/07 07/15 07/20 07/27
32.5 04/27 05/09 05/17 05/21 05/24 05/29 06/05 06/13 06/21 06/26 07/09
28.5 03/20 04/03 04/07 04/18 04/23 04/25 05/01 05/07 05/13 05/18 06/04
24.5 **/** 02/21 03/02 03/06 03/14 03/31 04/06 04/12 04/21 04/26 04/30
20.5 **/** 01/07 01/28 02/03 02/10 02/16 02/21 02/27 03/02 03/20 04/22
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