Spring 'Freeze' Probabilities (Jan 1 - Jul 31)
SPIRIT LAKE RS, at (457919)
| Temp F |
Earliest |
90% |
80% |
70% |
60% |
50% |
40% |
30% |
20% |
10% |
Latest |
| 36.5
| 06/01
| 06/05
| 06/12
| 06/19
| 06/25
| 07/03
| 07/06
| 07/07
| 07/12
| 07/24
| 07/28
|
| 32.5
| 05/20
| 05/23
| 05/31
| 06/04
| 06/05
| 06/05
| 06/10
| 06/16
| 06/25
| 07/01
| 07/28
|
| 28.5
| 04/12
| 04/20
| 04/21
| 04/28
| 04/29
| 05/06
| 05/09
| 05/24
| 05/27
| 05/30
| 06/28
|
| 24.5
| **/**
| 03/12
| 03/25
| 03/29
| 04/01
| 04/02
| 04/08
| 04/17
| 04/22
| 05/06
| 05/07
|
| 20.5
| **/**
| 01/25
| 03/14
| 03/20
| 03/26
| 03/29
| 04/02
| 04/04
| 04/08
| 04/28
| 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