I-15 weather conditions near Helena, Montana

Roadnow AI Agent Live Update

7 day weather forecast

• Overnight 2025-06-20, Showers Likely. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5am. Mostly cloudy, with a low around 56. Calm wind. Chance of precipitation is 60%.
• Friday 2025-06-20, Chance Showers then Showers. A chance of showers before noon, then a chance of showers and thunderstorms between noon and 1pm, then showers and possibly a thunderstorm after 1pm. High near 72. Light northwest wind becoming north northwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
• Friday Night 2025-06-20, Showers. Showers and thunderstorms, mainly before 4am. Low around 42. Northwest wind 6 to 10 mph becoming southwest after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
• Saturday 2025-06-21, Showers Likely. Rain likely before noon, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 63. West wind 9 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.
• Saturday Night 2025-06-21, Chance Rain then Rain. Rain, mainly after midnight. Low around 39. Northwest wind 6 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 80%.
• Sunday 2025-06-22, Showers. Rain before noon, then showers and possibly a thunderstorm after noon. High near 52. Northwest wind 6 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 90%.
• Sunday Night 2025-06-22, Chance Showers then Partly Cloudy. A 30 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 34. North wind 5 to 7 mph becoming light and variable after midnight.
• Monday 2025-06-23, Sunny then Slight Chance T-storms. A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 69. South southeast wind 3 to 6 mph.
• Monday Night 2025-06-23, Partly Cloudy. Partly cloudy, with a low around 40.
• Tuesday 2025-06-24, Sunny then Slight Chance T-storms. A slight chance of showers and thunderstorms after noon. Sunny, with a high near 75.
• Tuesday Night 2025-06-24, Partly Cloudy. Partly cloudy, with a low around 44.
• Wednesday 2025-06-25, Sunny then Slight Chance T-storms. A slight chance of showers and thunderstorms. Mostly sunny, with a high near 80.
• Wednesday Night 2025-06-25, Mostly Clear. Mostly clear, with a low around 48.
• Thursday 2025-06-26, Sunny then Slight Chance T-storms. A slight chance of showers and thunderstorms. Mostly sunny, with a high near 84.