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


ROCK SPRINGS AP, ta (487845)
Temp F Earliest 90% 80% 70% 60% 50% 40% 30% 20% 10% Latest
36.5 05/14 05/22 05/29 05/31 06/03 06/09 06/13 06/16 06/20 06/26 07/04
32.5 05/01 05/13 05/19 05/22 05/27 05/30 06/01 06/07 06/09 06/14 06/30
28.5 04/15 04/26 04/30 05/03 05/08 05/11 05/14 05/17 05/23 05/27 06/13
24.5 04/07 04/13 04/20 04/21 04/27 04/28 04/30 05/03 05/07 05/10 05/23
20.5 03/12 03/30 04/05 04/09 04/12 04/16 04/20 04/23 04/29 05/01 05/12
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