Is the museum still open during the week now?

Yes. 10-5.

It will soon go to winter hours, but yes the hours are 10 to 5 for now

Try the Website

I understand the Adirondack Museum now called the Adirondack Experience has closed for the season as of October 9th

I honestly don't know, with the weather that we are having I would like to think they are. Did you try the website for a phone number to call? Sorry, I think I asked more questions than you. Good luck