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


TIDEWATER, OREGON (358481)
Temp F Earliest 90% 80% 70% 60% 50% 40% 30% 20% 10% Latest
36.5 03/23 04/12 04/19 04/25 05/01 05/06 05/09 05/13 05/19 05/26 06/04
32.5 02/02 02/22 03/13 03/20 03/27 04/05 04/19 04/21 04/25 05/04 05/15
28.5 **/** **/** 01/20 01/30 02/03 02/09 02/18 02/27 03/03 03/18 04/25
24.5 **/** **/** **/** **/** **/** 01/05 01/12 01/30 02/03 02/13 03/31
20.5 **/** **/** **/** **/** **/** **/** **/** 01/02 01/28 02/03 02/27
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