I-15 weather conditions near Helena, Montana

Roadnow AI Agent Live Update

7 day weather forecast

• Tonight 2025-06-18, Mostly Clear. Mostly clear, with a low around 49. West wind 3 to 5 mph.
• Juneteenth 2025-06-19, Sunny then Chance T-storms. A 40 percent chance of showers and thunderstorms, mainly after 4pm. Sunny, with a high near 86. Calm wind becoming north 5 to 8 mph in the afternoon.
• Thursday Night 2025-06-19, Showers Likely. Showers and thunderstorms likely before 1am, then showers likely and possibly a thunderstorm between 1am and 2am, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 52. North wind 5 to 9 mph becoming light north northwest after midnight. Chance of precipitation is 60%.
• Friday 2025-06-20, Chance Rain then Showers. A chance of rain, then showers and possibly a thunderstorm after noon. High near 73. Light northwest wind becoming north northwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 90%.
• Friday Night 2025-06-20, Showers. Showers and possibly a thunderstorm. Low around 43. West wind 5 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 90%.
• Saturday 2025-06-21, Showers. Rain before noon, then showers likely and possibly a thunderstorm after noon. High near 61. West wind 5 to 10 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 80%.
• Saturday Night 2025-06-21, Rain Likely. Rain likely, mainly after midnight. Mostly cloudy, with a low around 37. West 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 70%.
• Sunday 2025-06-22, Showers. Rain before noon, then showers and possibly a thunderstorm after noon. Cloudy, with a high near 56. West wind 5 to 10 mph, with gusts as high as 20 mph.
• Sunday Night 2025-06-22, Slight Chance Rain then Mostly Clear. A slight chance of rain before midnight. Partly cloudy, with a low around 35.
• Monday 2025-06-23, Mostly Sunny then Slight Chance T-storms. A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 67.
• Monday Night 2025-06-23, Partly Cloudy. Partly cloudy, with a low around 41.
• Tuesday 2025-06-24, Sunny then Slight Chance T-storms. A slight chance of showers and thunderstorms. Mostly sunny, with a high near 75.
• Tuesday Night 2025-06-24, Partly Cloudy. Partly cloudy, with a low around 46.
• Wednesday 2025-06-25, Sunny then Slight Chance T-storms. A slight chance of showers and thunderstorms. Mostly sunny, with a high near 80.