National Weather Service United States Department of Commerce

For all fisherman, boaters, kayakers, and general overall users of inland lakes of south central and southeast Wisconsin, the National Weather Service (NWS) in Milwaukee is now preparing a forecast tailored for you!  

Each day through the warmer months at around 3 am and 3:30 pm, the NWS distributes an experimental forecast for the larger inland lakes across southern Wisconsin. The new experimental inland lakes forecast includes forecasts of wave height, weather, temperature, winds and an estimate of the surface water temperature.

You can find this inland lakes forecast at the following website:

Here is what the page looks like when first called up:

inland lake page

Forecasts are available for the larger inland lakes across south central and southeast Wisconsin including the Madison chain of lakes, Green Lake, Lake Geneva, Lake Wisconsin, Lake Country lakes of Waukesha County, and the southern portion of Lake Winnebago.  

All you need to do to view the forecast is either click or hover over the lake you are interested in.  Here is an example for Lake Winnebago:

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and an example for Lake Mendota in Madison:

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A four day forecast is displayed, including a forecast for wave heights for each period.  Also, an estimated surface water temperature of the lake will be displayed for the first two forecast periods. 

This inland lakes forecast is still experimental.  If you notice any problems with the page, or would like to send feedback, please email the NWS in Milwaukee at

Thank you.