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


HILTS SLASH DISPOSAL, (043987)
Temp F Earliest 90% 80% 70% 60% 50% 40% 30% 20% 10% Latest
36.5 05/16 05/27 06/03 06/10 06/16 06/20 06/27 06/29 07/02 07/08 07/10
32.5 05/11 05/12 05/17 05/20 05/22 05/23 05/27 05/30 06/07 06/27 07/05
28.5 04/14 04/20 04/22 04/27 04/29 05/03 05/06 05/07 05/18 05/28 07/05
24.5 02/04 03/12 03/20 04/02 04/10 04/17 04/19 04/20 04/23 04/26 05/06
20.5 01/19 01/30 02/03 02/06 02/11 02/23 03/12 03/22 03/30 04/09 04/20
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