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


WEST LINN, OREGON (359208)
Temp F Earliest 90% 80% 70% 60% 50% 40% 30% 20% 10% Latest
36.5 05/14 05/18 12/65 05/25 05/28 05/31 06/01 06/07 06/13 06/21 07/06
32.5 04/24 05/04 12/65 05/11 05/13 05/17 05/21 05/22 05/26 06/02 06/18
28.5 04/08 04/15 12/65 04/30 05/02 05/04 05/07 05/11 05/13 05/18 05/26
24.5 02/05 03/12 12/65 04/04 04/13 04/20 04/22 04/27 04/30 05/04 05/23
20.5 01/25 02/11 12/65 03/12 03/14 03/27 04/01 04/13 04/19 04/22 05/08
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