National Weather Service United States Department of Commerce

How to Obtain Official Climate Data


The National Climatic Data Center and the Midwestern Regional Climate Center fill various requests for climate data. These centers are responsible for monitoring and maintaining a large number of data sets for the National Weather Service and other organizations. Weather Service Forecasts Offices are responsible for archiving weather conditions for the past 30 days and then transmitting that information to the climate centers where the official archives are maintained.


National Climatic Data Center (NCDC):

The following links will take you to the NCDC web site
What is NCDC?
How to contact NCDC


Midwestern Regional Climate Center (MRCC):

MRCC is a cooperative program of the National Climatic Data Center and the Illinois State Water Survey in Champaign IL. Climate data is maintained for Illinois, Indiana, Iowa, Kentucky, Michigan, Minnesota, Missouri, Ohio, and Wisconsin.

For more information call (217) 244-8226 or write:

Midwestern Regional Climate Center
2204 Griffith Drive
Champaign, IL 61820