It doesnt know where Chicago is
It did not recognize my own zip code nor the closest two zip codes to my Chicago address. It associated my zip code with a suburban location and in Chicago that can mean night and day. Temperatures by the lake and away from the lake are vastly different and a city 20 miles away is not going to help my weather knowledge. At least it was free so I can dump it without further ado.
mhm4170 about
The Weather Network