Triple A says 92.3 million in the US are traveling for the holiday weekend, and in South Dakota it's likely you'll encounter snowfall at some point along the way. In Sioux Falls, a winter weather advisory is in effect from noon today to 6 a.m. Friday. The National Weather Service says spotty areas of light snowfall will become more widespread this afternoon and evening. It will taper off late tonight. Temperatures will fall throughout the weekend.