Missouri Frost / Freeze Probabilities Guide
Median Date Contour Maps
Contour maps visually show variations in frost/freeze temperature patterns across Missouri during the spring and fall seasons. Temperature data are used for the 30-year period 1981 - 2010. These data were obtained from the National Centers for Environmental Information (NCEI): http://www.ncdc.noaa.gov
Click on the spring or fall temperature in the box at upper right to see contour maps with median dates of a first or last frost / freeze.