Tue Jan 7 10:36:30 PM EST 2025 Missouri Headwaters- Including Harrison, Three Forks, Willow Creek, Pony, and Whitehall 834 PM MST Tue Jan 7 2025 ...DENSE FOG ADVISORY IN EFFECT UNTIL 11 AM MST WEDNESDAY... .REST OF TONIGHT...Colder. Partly cloudy. Widespread dense fog. Lows 5 to 10. Southwest winds 5 to 10 mph. .WEDNESDAY...Mostly cloudy. Areas of dense fog in the morning, then patchy blowing snow in the afternoon. A 20 percent chance of snow in the afternoon. Highs 35 to 40. Southwest winds 10 to 20 mph. .WEDNESDAY NIGHT...Mostly cloudy. A 50 percent chance of snow in the evening. Lows 15 to 20. West winds 5 to 15 mph. .THURSDAY...Mostly cloudy in the morning then clearing. Highs 30 to 35. West winds up to 5 mph. .THURSDAY NIGHT...Mostly clear. Lows 15 to 20. Southwest winds up to 10 mph. .FRIDAY...Mostly cloudy. Highs around 35. .FRIDAY NIGHT AND SATURDAY...Mostly cloudy with a 50 percent chance of snow. Lows around 25. Highs 30 to 35. .SATURDAY NIGHT AND SUNDAY...Mostly cloudy with a 20 percent chance of snow. Lows 15 to 20. Highs around 30. .SUNDAY NIGHT...Mostly cloudy. Lows around 10 above. .MONDAY THROUGH TUESDAY...Partly cloudy. Highs 25 to 35. Lows 10 to 15.