HOUSTON — The City of Houston is directing people to overflow shelters as temperatures plummet into the thirties amid rainfall, creating potentially life-threatening conditions for the homeless population. Local officials warn that the combination of cold and wet weather poses a severe risk of hypothermia for those exposed to the elements.

Coach Jim Harbaugh returns to Houston on Saturday with the Los Angeles Chargers for a wild-card playoff game against the Texans, a little more than a year after leading the Michigan Wolverines to a national championship at NRG Stadium.