Mon Feb 17 09:57:34 PM EST 2025 Arco/Mud Lake Desert-Upper Snake River Plain- Including Mud Lake, INL, Craters of the Moon NM, Idaho Falls, Rexburg, and St. Anthony 756 PM MST Mon Feb 17 2025 .TONIGHT...Mostly cloudy. A chance of snow in the evening...then a slight chance of snow after midnight. Colder. Snow accumulation up to 2 inches. Lows 14 to 24. Southwest winds 10 to 15 mph. .TUESDAY...Mostly cloudy with a slight chance of snow. Highs 28 to 36. Southwest winds 10 to 15 mph. Chance of precipitation 20 percent. .TUESDAY NIGHT...Mostly cloudy. Lows 12 to 22. Southwest winds around 10 mph. .WEDNESDAY...Cloudy with a chance of snow. Highs 28 to 35. Southeast winds up to 10 mph. Chance of precipitation 50 percent. .WEDNESDAY NIGHT...Snow likely. Accumulations possible. Lows 19 to 29. Northeast winds up to 10 mph. Chance of precipitation 70 percent. .THURSDAY...Mostly cloudy with a chance of snow. Highs 32 to 39. .THURSDAY NIGHT THROUGH SATURDAY NIGHT...Mostly cloudy. Lows 18 to 28. Highs 30 to 39. .SUNDAY...Mostly cloudy with a slight chance of snow. Highs 35 to 42. .SUNDAY NIGHT AND MONDAY...Mostly cloudy. A slight chance of rain and snow. Lows 24 to 34. Highs 38 to 45.