Some of my polar bear friends prefer to ride slower when it's cold because they say it's more comfortable with less of a wind chill. But I find that if I go too slowly, I don't get my blood circulating enough and end up cold for the entire ride. So perhaps you've found the happy medium -- slower riding on trails which requires more work than road riding and also has less wind exposure.

We are on a weather roller coaster here. Today has been warm but for the next few days we'll have the cold that is now in Michigan. I know a bunch of people who have been down at Bike Florida for a week or so, and from the photos I've seen they are quite happy with the weather there.