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


ROCK CREEK RCH, at (357260)
Temp F Earliest 90% 80% 70% 60% 50% 40% 30% 20% 10% Latest
36.5 05/18 05/19 12/65 05/29 06/08 06/13 06/17 06/23 06/27 06/30 07/23
32.5 05/06 05/10 12/65 05/19 05/21 05/22 05/28 05/29 06/09 06/22 07/23
28.5 03/16 04/01 12/65 04/17 04/21 04/24 04/26 05/01 05/08 05/14 06/01
24.5 03/06 03/13 12/65 03/25 04/01 04/04 04/05 04/07 04/11 04/15 04/17
20.5 01/23 03/01 12/65 03/14 03/21 03/24 03/28 03/31 04/02 04/04 04/09
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