You may wash your own clothes. Dryers are less prevalent, usually nonexistent. Hot water is also at a premium in most countries. Taking clothes that mix and match can help stretch your wardrobe. You will probably find that people do not have as many clothes as most Americans, nor do they change them as often as we do.
Most countries have appropriate clothing available.
You might consider buying a winter coat in your host country, for example. Avoid the urge to pack as though you will not be able to buy additional clothing in your host country. Money Take the amount of money suggested by your host institution. Americans come across as being rich and insensitive. Try to be aware of how you are being perceived.