Low 30's can be tricky, yet it's a great temp to test gear because you really can't hurt anything if you get too cold. Usually below 35 I start to cover my mouth to heat up the incoming air. I don't use foot coverings or switch to winter boots until 10 degrees or so. Good luck on your ride tomorrow!
This was last year...it's fun to say "I rode today" but realistically it's pretty foolish.