National Weather Service United States Department of Commerce


Frost/Freeze Decision Support Page

 

Freeze Warning
Frost Advisory

 

 

7-Day Minimum Temperature Forecasts

 

     


Midwestern Regional Climate Center Freeze Maps

 

To find the lowest low temperature so far this month, click on your city of choice below.

 

 

 

The maps below are courtesy of the Midwestern Regional Climate Center

https://mrcc.isws.illinois.edu/cliwatch/GIS_plots/frz_fall/frzmed_32_shd_Central.png

Median Date of First 32° Freeze
Based on 1981-2010 Average

Date of Latest First 32° Freeze

Median Date of First 28° Freeze
Based on 1981-2010 Average

Date of Latest First 28° Freeze

 

 

 

Freeze Watch:  Issued when conditions are favorable for temperatures to fall below 32 degrees Fahrenheit during the next 12 to 48 hours resulting in the possibility for significant damage to unprotected vegetation.

Freeze Warning: Issued when confidence is high that temperatures will fall below 32 degrees Fahrenheit within the next 24 hours resulting in significant damage to unprotected vegetation.

Frost Advisory: Issued when conditions are favorable for temperatures to drop between 33 and 36 degrees Fahrenheit resulting in the possibility of widespread frost near the surface. Unprotected vegetation may be damaged.

*NOTE: Frost/Freeze product issuance will cease for the season beginning October 16th.

 

 

Statistical Dates of the Last Fall Frost/Freeze

To assist the agricultural community, below is a table that summarizes the last calendar day when temperatures of a given threshold are expected to be met.

 

Below are a few examples on how to read the table using Aberdeen:

Mean (or average) date when temperatures are first expected to fall at or below 32F occurs on September 23rd.

An early 32F freeze (10th probability) will occur on or before September 9th.

A late 32F freeze (90th probability) will occur on or before October 8th.

(*) Denotes some missing data in the past 30 years.

Freeze Date Information

Fall
Freeze Probabilities

Period of Record

Freeze 32°

Hard Freeze: 28°

SOUTH DAKOTA

Mean

10th

90th

Mean

10th

90th

ABERDEEN

09/23

09/09

10/08

10/01

09/19

10/19

ANDOVER  AREA(*)

09/19

09/06

10/07

10/01

09/11

10/15

BOWDLE(*)

09/15

09/19

10/24

09/25

09/27

10/28

BRITTON

09/22

09/09

10/05

10/01

09/20

10/19

CASTLEWOOD(*)

09/21

08/31

09/30

09/29

09/18

10/16

CLARK(*)

09/28

09/17

10/09

10/06

09/22

10/19

CLEAR LAKE

09/28

09/17

10/15

10/09

09/26

10/25

COLUMBIA  AREA

09/24

09/11

10/08

10/04

09/24

10/22

EUREKA

09/21

09/06

10/06

10/02

09/18

10/06

FAULKTON

09/24

09/12

10/08

10/01

09/18

10/17

GANN VALLEY(*)

09/25

09/13

10/09

10/04

09/22

10/23

GETTYSBURG(*)

09/27

09/16

10/11

10/06

09/21

10/21

HIGHMORE(*)

09/25

09/11

10/07

10/04

09/21

10/20

IPSWICH

09/21

09/11

10/05

10/01

09/18

10/18

KENNEBEC

09/23

09/12

10/08

10/10

09/18

10/17

LEOLA(*)

09/23

09/14

10/05

10/02

09/21

10/17

McINTOSH  AREA

09/23

09/12

10/10

10/04

09/20

10/18

Mc LAUGHLIN(*)

09/22

09/11

10/09

10/02

09/19

10/20

MELLETTE  AREA

09/22

09/12

10/05

09/29

09/19

10/14

MILBANK(*)

09/27

09/17

10/12

10/06

09/24

10/23

MOBRIDGE

09/29

09/14

10/16

10/07

09/21

10/26

MURDO

10/05

09/20

10/23

10/12

09/24

10/28

ONIDA  AREA

09/26

09/15

10/10

10/05

09/24

10/22

PIERRE

10/05

09/22

10/19

10/12

09/28

10/28

POLLOCK

09/20

09/04

10/05

09/27

09/13

10/14

ROSCOE(*)

09/25

09/13

10/07

10/05

09/21

10/21

SELBY

09/25

09/14

10/10

10/04

09/20

10/17

SISSETON

09/27

09/17

10/14

10/09

09/23

10/24

SUMMIT

09/21

09/11

10/08

10/02

09/20

10/20

TIMBER LAKE

09/23

09/13

10/10

10/04

09/21

10/18

VICTOR

10/01

09/17

10/14

10/07

09/29

10/28

WATERTOWN

09/23

09/11

10/08

10/03

09/19

10/16

WAUBAY NATL WILDLIFE REFUGE

10/02

09/21

10/16

10/09

09/26

10/27

WEBSTER

09/28

09/11

10/13

10/06

09/22

10/24

Freeze Date Information

Fall
 Freeze Probabilities

HISTORICAL

Freeze 32°

Hard Freeze: 28°

MINNESOTA

Mean

90th

Latest

Mean

90th

Latest

ARTICHOKE  AREA

09/30

09/18

10/16

10/09

09/26

10/28

BROWNS VALLEY

09/26

09/15

10/08

10/04

09/23

10/20

WHEATON

09/28

09/15

10/13

10/09

09/23

10/28