Fall 'Freeze' Probabilities (Jul. 31 - Dec. 31)
WALLA WALLA 13 ESE, (358985)
| Temp F |
Earliest |
10% |
20% |
30% |
40% |
50% |
60% |
70% |
80% |
90% |
Latest |
| 36.5
| 08/01
| 08/25
| 08/30
| 09/04
| 09/07
| 09/10
| 09/11
| 09/14
| 09/17
| 09/23
| 10/03
|
| 32.5
| 09/08
| 09/14
| 09/15
| 09/20
| 09/23
| 09/24
| 09/28
| 10/02
| 10/03
| 10/04
| 10/19
|
| 28.5
| 09/13
| 09/29
| 10/04
| 10/13
| 10/15
| 10/18
| 10/21
| 10/25
| 10/30
| 11/02
| 11/17
|
| 24.5
| 10/09
| 10/15
| 10/23
| 10/31
| 11/02
| 11/04
| 11/10
| 11/16
| 11/27
| 12/02
| 12/14
|
| 20.5
| 10/17
| 11/04
| 11/12
| 11/16
| 11/21
| 11/28
| 12/01
| 12/05
| 12/15
| 12/25
| 12/31
|
Graphic Output
Earliest - Earliest 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 July 31 to
Dec. 31 period or insufficient data to determine a date.
07/31 means the minimum temperature can go below the threshold
temperature any day during the July 31 to Dec. 31 period.
xx% - Percent probability that a minimum temperature below the threshold will
occur on or before 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 been a year when the minimum temperature didn't
go below the threshold temperature during the July 31 to Dec. 31
period or insufficient data to determine a date.
Western Regional Climate Center, wrcc@dri.edu