Press Photo by Tim Gilman Kyle Lewis and Nick Potochnick, both of Bethlehem, during a run through the Christmas City Sunday afternoon with temps hovering around 40 degrees. Potochnick, a regular runner, said they were training for the upcoming St. Luke's Half Marathon. However, the taste of spring was short-lived as cooler temperatures have returned to the Lehigh Valley with below freezing wintry weather in the short-term forecast.