Always, always check the weather forecast before an outing. Be it an overnight camping or even a day hike. It can be rather cool early on then be warmer later. When in some of the Canyon areas the temp can cool off more. Plan ahead & prepare.
Weather.com can typically be helpful for questions like this
60°-70° but you can have very warm days and very cold days. That's just an average. Of course, later in the month, the colder it will probably be. And Halloween it seems to always be cold and raining LOL
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