Fall 'Freeze' Probabilities (Jul. 31 - Dec. 31)
WALLA WALLA RGNL AP, (458928)
Temp F |
Earliest |
10% |
20% |
30% |
40% |
50% |
60% |
70% |
80% |
90% |
Latest |
36.5
| 09/16
| 09/28
| 09/29
| 10/07
| 10/09
| 10/14
| 10/17
| 10/21
| 10/23
| 10/26
| 11/07
|
32.5
| 09/17
| 10/14
| 10/18
| 10/21
| 10/24
| 10/29
| 10/30
| 11/02
| 11/06
| 11/16
| 12/13
|
28.5
| 10/13
| 10/27
| 10/31
| 11/02
| 11/05
| 11/11
| 11/16
| 11/20
| 11/24
| 12/04
| 12/23
|
24.5
| 10/27
| 11/06
| 11/11
| 11/15
| 11/21
| 11/29
| 12/03
| 12/06
| 12/15
| **/**
| **/**
|
20.5
| 10/28
| 11/11
| 11/17
| 11/23
| 12/04
| 12/11
| 12/17
| 12/26
| **/**
| **/**
| **/**
|
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