I always found that cold weaather affected my performance negatively at least as much as heat. I had severe heat stress problems after three marathons but placed reasonably well.
After I moved to California in 1964, I found that I had to take precautions when I went east for the Boston race on cold days. I tighten up if it gets below the low 50s. This affects my training and racing. For Boston, on cold days, I coated my legs in linament and then added a layer of cocoa butter. I also wore ear muffs, a long sleeve shirt and gloves or socks on my hands but I found it very difficult to reverse tight muscles and run reasonably well when it was cold.