I grow mine with my Vandas - outside in Florida, so conditions are totally different, but....
During winter we get lower temps. All of my Vandas have slowed growth tremendously, based on root tip length. I would estimate that when average temps hit about 60 (70 high, 50 low) is when they really stopped. They seem to tolerate the cooler temps, but aren't growing much. In a cold snap average temps are around 50 (60 high and 40 low).
I'm guessing your indoor temps will be ok, but your light conditions might be low. I grew up in Chicago, but have lived in Minneapolis or Florida all of my orchid growing life. Chicago would have better light than Minneapolis, but lee than FL. I did well with phals in MN, but probably would have had to supplement the light for Vandas. Your summer temps (and humidity) will be fine
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