Tuf, how about going into a little detail with warmed up tires (as much as the day will allow) on a cold surface...such as early spring or late fall riding.
When the OAT (Outside Air Temp) decreases the longer it takes to heat the tires and the cooler the tire runs once it has reached the best temp you can get on a cool day which is usually less than optimum.
My rule of thumb is when the OAT drops below 50 degrees I end the knee dragging romp and become much more conservative. Actually I'll start backing off a little once it dips into the 50's.
When it's wet and or cold the tires performance drops accordingly and you should adjust your riding accordingly, especially for street activity. On chilly days you just can't get the heat up in the tire. The air whistling across the tire's surface at speed cools the tire as well as the cold pavement. When you stop the tire cools rapidly. All have a negative impact on the tire.
The best way to figure out how much heat you are builting in the tire is with an infrared heat themometer.