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


ROCK SPRINGS, e: (487840)
Temp F Earliest 90% 80% 70% 60% 50% 40% 30% 20% 10% Latest
36.5 05/17 05/26 06/01 06/05 06/10 06/13 06/18 06/23 06/27 07/02 07/21
32.5 05/05 05/13 05/16 05/20 05/22 05/27 06/01 06/04 06/07 06/13 06/20
28.5 04/10 04/26 05/02 05/07 05/10 05/12 05/14 05/18 05/23 05/27 06/14
24.5 03/26 04/13 04/21 04/23 04/25 04/28 04/30 05/03 05/06 05/11 05/21
20.5 03/16 03/31 04/04 04/07 04/10 04/13 04/16 04/21 04/24 04/29 05/01
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