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


AURORA sta, (350343)
Temp F Earliest 90% 80% 70% 60% 50% 40% 30% 20% 10% Latest
36.5 03/26 04/17 12/65 04/25 05/03 05/06 05/09 05/10 05/13 05/17 05/25
32.5 02/22 03/17 12/65 04/02 04/05 04/12 04/15 04/18 04/22 04/28 05/12
28.5 **/** 01/04 12/65 02/08 02/14 02/27 03/03 03/07 03/15 03/23 03/30
24.5 **/** **/** 12/65 **/** **/** 01/16 01/29 02/02 02/10 02/24 03/03
20.5 **/** **/** 12/65 **/** **/** **/** **/** 01/08 01/16 02/03 02/26
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