The humidity and temperature variations here in the States are *so* extreme that you really need to know *where* in the US you are going before making the call.

Arizona is, on average, dry and hot.

Louisiana is, on average, wet and hot.

The eastern seaboard can be anything from hot and moist to cold and dry and anything in between.

The rest of the states are all over the place in their climates as well. Check out what the average weather for the area you will be visiting before you go.