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


CORVALLIS STATE UNIV, (351862)
Temp F Earliest 90% 80% 70% 60% 50% 40% 30% 20% 10% Latest
36.5 04/03 04/30 05/04 05/10 05/13 05/17 05/21 05/25 05/30 06/04 07/03
32.5 02/13 03/26 04/06 04/13 04/19 04/24 04/29 05/01 05/07 05/17 06/24
28.5 **/** 02/03 02/13 02/19 02/27 03/07 03/14 03/26 04/04 04/14 05/11
24.5 **/** **/** **/** 01/16 01/26 01/31 02/04 02/12 02/19 03/03 04/13
20.5 **/** **/** **/** **/** **/** 01/04 01/16 01/29 02/03 02/11 03/03
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