A freeze warning is in effect for inland Lake county and all of Cook county. A frost advisory is in effect from the Borderland to the Iron Range, as well as a portion of northwest Wisconsin. High pressure will move over eastern Lake Superior on Thursday. With a southeast flow of air, high temperatures will only be in the 40's to 50's over Lake and Cook county. Further away from the lake, high temperatures will be in the upper 50's to the middle 60's.