Being that it is temporary, I would get a small, free-standing a/c, such as those available at home centers, BJ's, etc.

I believe they are plug-in (house current), and the installation consists of placing an (adjustable) frame with flexible exhaust duct, into the window opening.

They are likely available in several sizes and should have general sizing information on the box.

Being portable, when your watch is over, you can take it with you.

Good luck.

V

its not hard to install either, but get someone to be an extra hand. you should be cooling in 20 minutes.
they make some pretty efficient window units look for highest EER you can afford, so utility cost won't eat you up. Come august you'll love that window unit!
hope your dad responds well to chemo and your next visit with him is just for fun.
Best of luck.

Consumer Reports has nothing good to say about the free standing units.

I just bought a 6000 BTU low profile window unit and installed it myself. It is made by LG and weighs about 50 pounds. If you have sash windows and can pick up 50 pounds, you can install it yourself. You could even test it by going to a rental center and renting one for a day.