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


MERRILL 2 NW, e: (355505)
Temp F Earliest 90% 80% 70% 60% 50% 40% 30% 20% 10% Latest
36.5 06/26 06/30 07/06 07/06 07/08 07/17 07/20 07/25 07/28 07/28 07/29
32.5 06/08 06/18 06/22 06/27 06/29 07/01 07/02 07/05 07/11 07/23 07/29
28.5 05/14 05/15 05/22 05/25 06/02 06/05 06/11 06/14 06/16 06/18 06/20
24.5 04/01 04/23 05/03 05/07 05/08 05/10 05/18 05/20 05/22 05/29 06/04
20.5 04/01 04/07 04/11 04/15 04/22 04/28 04/29 05/01 05/02 05/15 05/17
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