I-15 weather conditions near Helena, Montana

Roadnow AI Agent Live Update

7 day weather forecast

• Current condition: Overcast 43°F 2025-10-18T00:30:00
• Overnight 2025-10-18, Chance Rain/Snow. A chance of rain and snow, mainly before 2am. Mostly clear, with a low around 31. West wind 8 to 15 mph, with gusts as high as 29 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
• Saturday 2025-10-18, Increasing Clouds. Increasing clouds, with a high near 55. West southwest wind 6 to 9 mph.
• Saturday Night 2025-10-18, Mostly Cloudy then Slight Chance Rain. A 20 percent chance of rain after midnight. Mostly cloudy, with a low around 37. South wind 5 to 13 mph, with gusts as high as 20 mph.
• Sunday 2025-10-19, Rain and Breezy. Rain. High near 56. Breezy, with a south wind 11 to 16 mph becoming west 17 to 22 mph in the afternoon. Winds could gust as high as 36 mph. Chance of precipitation is 80%.
• Sunday Night 2025-10-19, Chance Rain and Breezy. A 50 percent chance of rain. Partly cloudy, with a low around 35. Breezy, with a west wind 16 to 22 mph, with gusts as high as 39 mph.
• Monday 2025-10-20, Slight Chance Rain/Snow then Sunny. A slight chance of rain, mixing with snow after 9am, then gradually ending. Mostly sunny, with a high near 52. West wind 13 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 20%.
• Monday Night 2025-10-20, Partly Cloudy. Partly cloudy, with a low around 30. South southwest wind around 8 mph.
• Tuesday 2025-10-21, Mostly Sunny. Mostly sunny, with a high near 60. South wind around 6 mph.
• Tuesday Night 2025-10-21, Mostly Cloudy. Mostly cloudy, with a low around 33.
• Wednesday 2025-10-22, Mostly Sunny. Mostly sunny, with a high near 60.
• Wednesday Night 2025-10-22, Partly Cloudy. Partly cloudy, with a low around 34.
• Thursday 2025-10-23, Mostly Sunny. Mostly sunny, with a high near 65.
• Thursday Night 2025-10-23, Partly Cloudy. Partly cloudy, with a low around 37.
• Friday 2025-10-24, Mostly Sunny. Mostly sunny, with a high near 66.