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


OREGON CITY, : (356334)
Temp F Earliest 90% 80% 70% 60% 50% 40% 30% 20% 10% Latest
36.5 03/21 04/03 04/12 04/20 04/24 04/29 05/03 05/05 05/12 05/21 05/27
32.5 01/30 02/26 03/17 03/23 03/29 04/04 04/08 04/13 04/19 04/26 05/14
28.5 **/** 01/21 02/02 02/09 02/14 02/22 02/28 03/06 03/12 03/21 04/02
24.5 **/** **/** **/** 01/06 01/21 01/30 02/02 02/06 02/18 03/03 03/22
20.5 **/** **/** **/** **/** **/** **/** 01/07 01/22 02/02 02/08 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