City by City Forecast:
BOZEMAN: LOW: 12°; HIGH SATURDAY: 42°. Mostly clear and cold Friday night with patchy valley fog by early Saturday morning. Mostly sunny and mild Saturday afternoon with light winds.
BUTTE: LOW: -6°; HIGH SATURDAY: 37°. Colder tonight under mostly clear skies. Valley freezing fog is likely and could be very thick at times reducing visibility under a half of a mile. Mostly sunny and mild by Saturday afternoon.
DILLON: LOW: 11°; HIGH SATURDAY: 36°. Mostly clear and cold Friday night with river bottom fog. Mostly sunny and mild by Saturday afternoon.
WEST YELLOWSTONE: LOW: -10°; HIGH SATURDAY: 33°. Bitterly cold Friday night with lows falling well below zero by Saturday morning. Patchy valley fog is possible. Mostly sunny and fair Saturday afternoon.