NOAA's National Weather Service Weather Forecast Office

The Chicago/Romeoville National Weather Service Forecast Office issues generalized weather forecasts out to 7 days for north central and northeast Illinois and far northwest Indiana. Other offices (including Quad Cities, Lincoln, St. Louis and Paducah) issue forecasts for the remainder of Illinois and Indiana.

These forecasts are the product of a mix of scientific models and forecaster experience. The models run twice a day and so routine forecasts are issued in the early morning and mid afternoon (4 am and 4 pm). Updated forecasts are issued as conditions warrant.

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Latest Forecasts for Northern Illinois and Northwest Indiana:

• Chicago Metropolitan Forecast Forecast for all of the Chicagoland area
• Downtown Chicago Forecast
• Downtown Rockford Forecast
• Point Forecast Matrix for all of Northern Illinois and Northwest Indiana
• Area Forecast Discussion Technical disscussion of Chicago WFO Forecast
• Coded Cities Forecast of specific high and low temperatures and probability of precipitation

State Forecasts for Midwestern states:

• Illinois
• Indiana
• Wisconsin
• Iowa
• Michigan

Forecasts Maps: from the Hydrometeorological Center

12 Hour Fronts/Precipitation	24 Hour Fronts/Precipitation	36 Hour Fronts/Precipitation	48 Hour Fronts/Precipitation
Day 3 Fronts	Day 4 Fronts	Day 5 Fronts	Day 6 Fronts

Long Range Forecasts: Outlooks Courtesy of the Climate Prediction Center (http://www.cpc.ncep.noaa.gov/) How to interpret the following maps and other FAQ's. 8 to 14 Day Outlook  Outlook    Graphical Month Outlook   Outlook    Graphic Seasonal Outlooks