It's going to be hotter than all hell at that time. But if you do ride I believe there's a few rental places in Brawley, the town just outside of glamis. If you just drive around, go cruise up and down gecko road and especially up to osbourne overlook to get a good view of the dunes.
Heres a decent little map
Brawley is to the west, Gecko road is the first turn off after you pass the canal, Osbourne will be the second one at the top of the hill (its that tiny little road on the map just before vendor row), and the wash road is just before the train tracks.