"hours, and the wind" is correct and uses what is called an oxford comma.
"hours, the wind" can be considered to be incorrect as it creates a run-on sentence.
"hours; and the wind" is technically correct however using the semi colon doesn't require the following "and" and can be considered to be superfluous"
"hours and the wind" can also be considered to be correct even though it doesn't use the oxford comma, however, some might consider it incorrect as the oxford comma is considered by many to be obsolete.
