Wisconsin State Climatology Office
 John Young, Director & Professor Emeritus
Your climate information resource for Wisconsin
Wisconsin State Climatology Office

Wisconsin Climate Watch

Wisconsin Seasons

Past  Wisconsin Climate

Other Climate Data Links & Maps


Wisconsin Climate Impacts

Climate Change

Climate News

Climate Education & Outreach


Who We Are

SCO Site Map

The Wisconsin State Climatology Office is affiliated  with the Department of Atmospheric and Oceanic Sciences at the University of Wisconsin-Madison.

Our mission is to manage data for climate monitoring, to provide climate information to Wisconsin residents and government agencies, to develop "value-added" products for users and impact applications, and to conduct applied climate research.

This office is a partner with Midwestern Regional Climate Center in providing climate services to the public.
Collaborations with Wisconsin Initiative on Climate Change Impacts (WICCI) research on climate impacts are now underway.

If you would like assistance finding the climate data you want, visit our Guide to Wisconsin Weather and Climate Data.
Short initial inquiries for data or staff assistance staff are free. More substantial efforts are covered by our Service Charge statement.



Late Winter 2014-2015 Report: Mild Temperatures Lead to Exceptional Cold

This season has had two faces, with the first month of meteorological winter (December) warmer than normal, and now a very cold final month of February. Taking into account computer model projections of a continuing "polar vortex" jet stream pattern, February will average close to the exceptional February 2014, which averaged 12 degrees below normal and ranked in the coldest 10% in our records.

Ice: Unusual for Madison Lakes, Approaching Exceptional for Great Lakes

Madison Lakes- The two largest ones (Mendota and Monona) closed about two weeks later than average due to the abnormally warm December, while the smaller Lake Wingra closed two weeks earlier due to the abnormally cold November. See our Madison Lakes Ice Summary website for details.
Great Lakes- In mid- February their average ice cover increased rapidly beyond its normal maximum value for the season. On Feb. 20, Lake Michigan had about 60% coverage, Lake Superior was over 90%. For the Great Lakes, our Feb. 20 estimate is that last winter's exceptional March ice cover of 92.5% will be nearly matched in March 2015. Great Lakes ice cover maps are updated daily by NOAA's Great Lakes Environmental Research Laboratory.

A long-term view of past winter seasons can be found on our Winter Page. Related graphs and links may be found on the Climate Watch and Climate Impacts pages.

Climate Change

New! IPCC Report: Climate Change 2013  - Six years of new observations and analyses in this most authoritative scientific report. Physical Science Conclusions released in September 2013.  

The American Meteorological Society (AMS) posted an Information Statement on Climate Change on 20 Aug 2012.

Climate Literacy -- Understanding the essential principles.

IPCC 2007 Report -- Six years of new observations and analyses in this most authoritative scientific report..

U.S. Global Change Research Program (2009) -- Impacts and regional issues.

For additional climate-change information, see our Climate Change page.


To Contact Us: Wisconsin State Climatology Office
1225 W. Dayton St.
Madison, WI 53706
Phone: 608–263–2374
Fax: 608–262–0166
Email: STCLIM@aos.wisc.edu