We intended to drive over mountains when we flew to Antalya in january arriving at 11pm but the car hire company said it was not advisable due to the weather(snow). We drove round the coast which took over 4 hours. Driving back to Anatalya during the day it was easy to see why they told us not to go through the mountains , the roads were clear but lots of snow on the verges and it was really cold. I would defintely not go through the mountains if there is a chance of snow. Have you tried accuweather?