PHOTOS BY JOHN CAVANAUGH Joe Grushecky and Reagan Richards sing “Gimme Shelter” together at the Count Basie Center for the Arts in Red Bank, March 12. The annual Light of Festival WinterFest happened only online in 2021, because of the pandemic, and then this year’s return to normalcy was pushed from January to March because of the Omicron spike. But at least that meant that the main concert wouldn’t have to take place in the middle of brutal January weather, right? Uh, wrong. March 12, the day for that main concert at the Count Basie Center for the Arts in Red Bank, was about as January-like …