My Cateye Strada (wired) does everything I want/need (time of day, ride time, speed, max, avg, trip meter, and odo). I wouldn't mind a backlight, but if it's that dark I usually have my lights (incl. my helmet mounted Spok) on, so I can still see the display.
As for thermometer, I don't have one. I check the outdoor temp on radio, tv, or web before leaving home. Once I'm riding, actual temp means nothing. I vary clothing to the extent possible based on wlhow I feel, not what a thermometer reads...