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


GRAND VIEW 4 NW, ta (103760)
Temp F Earliest 90% 80% 70% 60% 50% 40% 30% 20% 10% Latest
36.5 04/15 05/02 05/08 05/14 05/21 05/24 05/26 05/31 06/08 06/15 06/30
32.5 03/31 04/22 04/29 05/02 05/07 05/08 05/12 05/17 05/22 05/25 06/21
28.5 03/26 04/08 04/09 04/13 04/16 04/20 04/27 05/02 05/06 05/12 06/21
24.5 02/09 03/22 03/27 03/29 04/02 04/06 04/09 04/14 04/17 04/21 05/23
20.5 02/01 02/20 03/04 03/12 03/17 03/23 03/29 04/02 04/08 04/15 05/22
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