OP, like a lot of fellow riders are saying, it is likely to be hot (90s) during the day. But crimony, it's AZ for crying out loud. Flag is great too, and at 7000+ feet, it will definitely be cooler. But like I said earlier, if Sedona is getting its daily thunderstorms by July 4 (a distinct possibility), they tend to cool things off by tens of degrees and make for awesome afternoon riding. People do actually ride bikes in Sedona in the sumnertime. Ride in the morning until you're hot and the storms roll in, grab lunch at any number of good restaurants during the rain, and ride hero dirt in the afternoon. And if you can stay for two days, by all means hit Flagstaff. Or skip Sedona altogether. No offense to the other AZ riders who have offered some good advice, but your original question was about Sedona, and while it will be hot, it is not at all unridable, and myself having grown up in Montgomery and remember how hot it got there, there is no suffocating 90% humidty here when it's in the 90s here. I've lived and ridden in Phoenix year-round since 1993. Sedona is perfectly ridable in July. You'll sweat your ass off climbing, and be grinning ear to ear on the descents. Take more water than you think you'll need (100 oz per 15-20 miles is reasonable). Hope you enjoy your trip. That is all.
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