Chicago Weather In January
Chicago Weather In January is normally cold and snowy, with low temperatures that range between bad and awful. An abnormally warm day (something above 45) would be pleasant, but don't bet on it happening during your time in Chicago in January.
Pack your warmest clothes if you are visiting Chicago in January. If you like to stay active all of the good hotels, and even some mediocre ones, will have workout rooms, many will have indoor pools as well.