I'm going to visit the Grand Canyon at Friday the West part and I wonder if is it cold and windy or warm enough so that what clothes do I need to pack in my luggage the thick ones or the thin ones. Please answer as fast as you can!

It will be warm enough and you need some thick clothes in the night

I think it can be cold at night but it's really hot at daytime (it's like almost 40 degrees Celsius).

Take warm clothes with you. There could be some wind as well.

Have warm clothing, face cover, beanie, gloves, and appropriate shoes. I was just there this weekend. Wind gusts can be bad. It is dessert and winter time. I just had a backpack to put everything in if I got warm. Don't forget chapstick and tissue for when your nose starts running.

I was just there last week... It was colder up top due to wind gust. We took the flight to the bottom. It was comfortable down there... Bring a jacket and possible hat or beanie for the wind.

Buy clothes in Uniqlo. Good to all situation.