I just got back from a 24.6 km ride on my Catrike Road.
The temp was 0°C and there was a 5 km/hr breeze
I was dressed in my SkiDoo suit with a sweater, leather mitts, balaclava, helmet (of course), bike shoes (clipless pedals), and "booties."
My initial analysis is that my speed is about the same. I don't have a speedo/computer on it yet; but there is a section of five measured kilometers. So with the aid of my watch and my skill at arithmetic, I determined I was travelling almost the same speed as I do in the summer. The difference, I think, can be attributed to the heavy (bulky) clothing and the newness of the Catrike. (The motor needs "breaking in.") As well as the fact that I have not been on a bike for almost five months except for a short ride I took recently on the Catrike.
My feet were cold (even with the booties), but the rest of me was warm -- almost too warm. I didn't really need the sweater. And I could have done it with long-finger biking gloves instead of the mitts.
The roads in town are covered in ice and snow, so I loaded the Catrike into the back of my Taurus wagon (which I recently bought just to haul the Catrike) and drove out 20 km to a spot where I could park the car. Then I unloaded the Catrike and rode from there.
In all it was a great ride. I did find that the big trucks seemed to kick up more sand into my face as they passed me. I never noticed that fact when riding my DF. Perhaps it is a fault of riding so low to the ground??
For those of you who enjoy even warmer temps, I envy you; but I also enjoy these cool days almost as much as the heat you experience.