NR = Not Reported. The official station did not report records for that time. The Weather Warehouse provides a complete Weather history for over 10,000 official National Weather Service (NWS/NOAA) government weather stations (one of the best offerings on the web). Past weather data is available for some stations as far back as 1902.
Six Flags Great America. Gurnee, Illinois. Located between Chicago and Milwaukee on Interstate 94, Six Flags Great America features eight themed areas, each highlighting a different aspect of Americana. The theme park opened in 1976 and was owned and operated by Marriott before being sold to Six Flags in 1984.
Six Flags Great America is a Six Flags theme park located at Gurnee, Illinois, in the Chicago metropolitan area. It first opened in 1976 as Marriott's Great America. Six Flags purchased the park from the Marriott Corporation in 1984, making it the seventh park in the chain. As of 2016, the park has ten themed sections, a 20-acre (81,000 m2) water park, three specially themed children's areas, and various other forms of entertainment.