I attempted Sonora Pass East today after Monitor Pass East & West. I felt ok on Monitor but after the drive to Sonora my legs didn't want to get going again, and when the rain started coming down I contemplated turning around. The thunder sealed the deal. 1000 feet up and I turned around and headed back to my car in shame. Oh well I guess I'll try again next year.
Nothin' to be ashamed of, especially with Monitor already in the bag. I think you made the right call. Between the chance of getting hit by lightening and the idea of descending down a very steep, twisty wet road
. . . way too much risk of serious injury or worse.
Besides, Sonora Pass is nasty-@ss steep.