Ok,I voted either. Because I have been out on bone chilling days in the single digits to high teens. While on the other end of the spectrum it is 95 but the heat index is 105. Or my all time least favorite 45-50 with a steady rain, brrr. Physically I am much faster and feel better at temps above 90. My average in January on a clear road day is a only 12 to 13mph. Now get me in the heat of July and they are 16-18mph depending on the amount of vert. Flat out can be in the low 20's.