Duluth, MN (NNCNOW.com) -- Duluth's Spirit Mountain will close early Monday and Tuesday due to extreme wind chill. The extreme cold temperatures have forced Spirit Mountain to close at 5:00 p.m. on Monday, January 21 and Tuesday, January 22 instead of the regular time of 8:00 p.m. The Spirit Mountain Adventure Park will close at 5:00 p.m. Monday and will not re-open on Tuesday. Posted to the web by Jenna Vogt