Spring 'Freeze' Probabilities (Jan 1 - Jul 31)
UMATILLA s, r
(358734)
| Temp F |
Earliest |
90% |
80% |
70% |
60% |
50% |
40% |
30% |
20% |
10% |
Latest |
| 36.5
| 04/04
| 04/17
| 04/23
| 04/29
| 05/03
| 05/05
| 05/07
| 05/11
| 05/15
| 05/27
| 07/03
|
| 32.5
| 03/20
| 03/26
| 03/30
| 04/05
| 04/11
| 04/15
| 04/18
| 04/20
| 04/25
| 04/30
| 06/18
|
| 28.5
| 02/16
| 03/06
| 03/14
| 03/23
| 03/28
| 04/02
| 04/04
| 04/07
| 04/12
| 04/22
| 05/01
|
| 24.5
| **/**
| 02/10
| 02/18
| 02/28
| 03/06
| 03/10
| 03/16
| 03/20
| 03/26
| 04/02
| 04/29
|
| 20.5
| **/**
| 01/12
| 01/30
| 02/07
| 02/13
| 02/18
| 02/22
| 03/01
| 03/06
| 03/17
| 04/29
|
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