2012 Frost/Freeze Update - NWS La Crosse

The National Weather Service (NWS) uses a combination of Frost Advisories and Freeze Warnings to highlight conditions when frost or freezes are expected in the early fall that might impact sensitive vegetation. Typically the NWS will stop using these advisories or warnings once a hard frost or freeze occurs for the season.

Due to the colder weather in September in the La Crosse NWS area, frost / freeze advisories or warnings are done for all counties except those along the Mississippi and Wisconsin River valleys.

As of this time, additional FROST ADVISORIES or FREEZE WARNINGS may still be needed and issued this fall, including:

  • Southeast Minnesota - Wabasha, Winona, and Houston Counties.
  • Northeast Iowa - Allamakee and Clayton Counties.
  • West/Southwest Wisconsin - Buffalo, Trempealeau, La Crosse, Vernon, Richland, Crawford, and Grant Counties.

Coordination of frost and freeze headlines has been made with surrounding NWS forecast offices.

The maps below (courtesy of the Midwestern Regional Climate Center) graphically show the updated dates of when freezing temperatures have occurred this fall, in addition to when the average first freeze is.

Current 32° Freeze Map Current 28° Freeze Map
Median Date of 32° Freeze   Based on 1981-2010 Average Median Date of 28° Freeze   Based on 1981-2010 Average

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