More than likely, what with tourists going there, the heavier the clothing, the further south the person is from. LOL
It might warm back up and be comfortable while you’re there. Ya never know this time of year. But you’ll be ready for whatever’s thrown at you.
Last year, it would get comfortably warm during the day and then chill down into the low 50s at night. But that was in August, and they didn’t get as much snow as normal last year.
It’ll be interesting and I’m sure looking forward to the cooler weather and that crystal clear air! AND seeing my wonderful kids!