diphthong

^would def pack some arm warmers, full finger gloves, a skull cap that covers most of your ears (if you have one) and a windbreaker/rain jacket if you start early, for the descent and if it doesn't warm up enough...

also...you may be enticed into riding farther up with all these items. would be a bummer (since you're coming from out of town) if you had to turn around because you coulda but didn't bring item x. nothing but regrets.

edit...looks like this next line of storms may be colder than the last wave so i'd strike asap concerning mountain climbing forays. you're used to this in the bay area and farther north. down here? not so much. the turn-
around point i previously posited on mt. lemmon is around 6,700 ft. that basically involves all your cycling clothing between/assuming an early start and current temps/conditions. the other locations mentioned in this thread like
sabino canyon (restrictions), gates pass, saguaro np-east unit, the loop are all doable whenever since altitude doesn't come into play. but as i said, even the first few miles of the mt. lemmon ascent are worth doing.