I-15 weather conditions near Helena, Montana

Roadnow AI Agent Live Update

7 day weather forecast

• Current condition: Clear 88°F 2025-08-19T19:45:00
• Tonight 2025-08-19, Slight Chance T-storms then Mostly Clear. A slight chance of showers and thunderstorms between 9pm and midnight. Partly cloudy, with a low around 63. East northeast wind around 6 mph becoming west southwest after midnight. Chance of precipitation is 20%.
• Wednesday 2025-08-20, Sunny then Slight Chance T-storms. A 20 percent chance of showers and thunderstorms after 4pm. Sunny, with a high near 91. Calm wind becoming west northwest 5 to 9 mph in the afternoon. Winds could gust as high as 21 mph.
• Wednesday Night 2025-08-20, Slight Chance T-storms then Partly Cloudy. A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 59. West wind 6 to 10 mph, with gusts as high as 21 mph.
• Thursday 2025-08-21, Sunny. Sunny, with a high near 84. Light and variable wind becoming north northwest 5 to 7 mph in the afternoon.
• Thursday Night 2025-08-21, Mostly Clear. Mostly clear, with a low around 54. North northwest wind 5 to 8 mph.
• Friday 2025-08-22, Sunny. Sunny, with a high near 80. North wind 5 to 9 mph, with gusts as high as 20 mph.
• Friday Night 2025-08-22, Mostly Clear. Mostly clear, with a low around 52. North wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 20 mph.
• Saturday 2025-08-23, Sunny. Sunny, with a high near 84. Calm wind becoming northeast around 6 mph in the afternoon.
• Saturday Night 2025-08-23, Mostly Clear. Mostly clear, with a low around 55.
• Sunday 2025-08-24, Sunny. Sunny, with a high near 87.
• Sunday Night 2025-08-24, Mostly Clear. Mostly clear, with a low around 57.
• Monday 2025-08-25, Sunny. Sunny, with a high near 87.
• Monday Night 2025-08-25, Mostly Clear. Mostly clear, with a low around 57.
• Tuesday 2025-08-26, Sunny then Slight Chance T-storms. A slight chance of showers and thunderstorms. Sunny, with a high near 86.