MYRTLE BEACH, S.C. (WBTW) — Temperatures Thursday morning will be a little cooler for some spots, with lows starting in the low to mid 50s inland. Beaches will stay a bit milder, with temperatures holding in the lower 60s. Despite the cool start, we’ll have another pleasant day with near-normal temperatures. Highs will reach the upper 70s along the coast and the lower 80s inland…