Skip to main content

Exploring Historical Freeze Dates in the Midwest and Northeast Regions

The Freeze Date Tool is a product created by the Midwestern Regional Climate Center (MRCC) in collaboration with the USDA Midwest Climate Hub to provide information about the climatology of freezing temperature dates across the north-central and northeastern United States. This tool can be used to answer questions such as:

  • On average, what day of the year does this county experience its first fall 32 °F freeze?
  • What would be considered an early last spring 28 °F freeze for this county?
  • When did the record latest first fall 32 °F freeze occur for this county?
  • How have the dates of the last spring 30 °F freeze changed over time across the region?
  • Has the growing season for this county gotten statistically significantly longer over time?

Use the dynamic tool to explore several visualizations, including decadal trends and growing season length. Select your preferred temperature threshold from the following options: 20°, 25°, 28°, 30°, 32°, 35°, and 40° Fahrenheit.

Learn more about the tool's development here and watch a webinar recording below that features a discussion of Midwest freeze dates and a tool tutorial.

Learn more about changes in Midwest freeze dates and watch a tutorial for navigating and interpreting the Freeze Date Tool.




Researcher, Extension, Producer, Land Manager, Other

Time Investment:


Spatial Scale:


Time Scale:


Tool Developers:

Midwestern Regional Climate Center and the Midwest Climate Hub