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


ROSEBURG RGNL AP, st (357326)
Temp F Earliest 90% 80% 70% 60% 50% 40% 30% 20% 10% Latest
36.5 04/03 04/16 04/21 04/27 04/30 05/06 05/15 05/18 05/23 06/06 07/29
32.5 02/11 03/10 03/16 03/26 04/02 04/07 04/14 04/21 04/26 05/08 05/27
28.5 **/** 01/17 02/07 02/13 02/20 03/01 03/06 03/12 03/17 04/01 05/01
24.5 **/** **/** **/** **/** **/** 01/05 01/25 01/31 02/14 02/29 03/20
20.5 **/** **/** **/** **/** **/** **/** **/** 01/21 01/30 02/27 03/20
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