Will the cool breeze ruin my plants?

I keep most of my plants in my only window, which is this lovely west-facing arch. I have primarily tropical (monstera, pothos, etc) so I keep the window closed for humidity and warmth. However, it’s the only window in my apartment and the fall weather is so lovely. Will my plants suffer if I periodically open the window and allow the cooler (15-18°C) weather and breeze in? I can (and will, if I have to) move my plants further from the window, but I don’t have as much light elsewhere.
Thanks!