That's the cut-off temperature for holding tours.
They close for weather-related safety reasons-e.g., flash floods or if it gets too hot.Įrin and I went at 3pm in the afternoon on a day that was reaching 105☏ on the rental car thermometer. Sometimes the tour companies will close down the tour. Make sure they are still open for the day.
The only thing I would advise you to do ahead of time is call ahead. This was the advice the tour company gave us when we called and it worked great. Otherwise, drive over yourself and then book when you get there. Do not book ahead for an Antelope Canyon tour.