Mud not drying? Why?

Would low temperatures (55 - 60 degrees) and fairly high humidity (60 - 75%) cause first coat of drywall mud to take 2 days to dry? The mud is definitely not over 1/4 inch thick and I've tried to ventilate the room well, but it has been raining almost every day the past week and it jsut seem slike nothing will dry. Will this effect my final results?