I-15 weather conditions near Helena, Montana

Roadnow AI Agent Live Update

7 day weather forecast

• Tonight 2025-06-20, Showers. Showers and possibly a thunderstorm. Low around 42. Northwest wind 6 to 13 mph becoming west southwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
• Saturday 2025-06-21, Chance Rain then Slight Chance T-storms. A chance of rain, mainly before 9am, then a slight chance of showers and thunderstorms after noon. Partly sunny, with a high near 65. West wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.
• Saturday Night 2025-06-21, Slight Chance Rain then Rain. Rain, mainly after 2am. Low around 37. Northwest wind 12 to 17 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 80%.
• Sunday 2025-06-22, Rain. Rain. High near 49. Northwest wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 100%.
• Sunday Night 2025-06-22, Chance Showers then Partly Cloudy. A 30 percent chance of showers before midnight. Mostly cloudy, with a low around 33. Northwest wind 5 to 8 mph becoming light and variable after midnight.
• Monday 2025-06-23, Sunny then Chance Showers. A 30 percent chance of showers after noon. Mostly sunny, with a high near 68. South wind 3 to 7 mph.
• Monday Night 2025-06-23, Mostly Clear. Mostly clear, with a low around 39. West wind 5 to 7 mph becoming calm in the evening.
• Tuesday 2025-06-24, Sunny. Sunny, with a high near 76. Calm wind becoming south southwest around 6 mph in the afternoon.
• Tuesday Night 2025-06-24, Mostly Clear. Mostly clear, with a low around 44.
• Wednesday 2025-06-25, Sunny. Sunny, with a high near 80.
• Wednesday Night 2025-06-25, Partly Cloudy. Partly cloudy, with a low around 49.
• Thursday 2025-06-26, Mostly Sunny then Slight Chance T-storms. A slight chance of showers and thunderstorms. Mostly sunny, with a high near 82.
• Thursday Night 2025-06-26, Partly Cloudy. Partly cloudy, with a low around 50.
• Friday 2025-06-27, Mostly Sunny then Slight Chance T-storms. A slight chance of showers and thunderstorms. Mostly sunny, with a high near 82.