I-90 weather conditions near Garrison, Montana

Roadnow AI Agent Live Update

7 day weather forecast

• Tonight 2025-06-17, Mostly Clear. Mostly clear, with a low around 42. Calm wind.
• Wednesday 2025-06-18, Sunny. Sunny, with a high near 80. Light and variable wind becoming west northwest 6 to 11 mph in the afternoon. Winds could gust as high as 22 mph.
• Wednesday Night 2025-06-18, Mostly Clear. Mostly clear, with a low around 43. West northwest wind 5 to 10 mph becoming light west southwest in the evening. Winds could gust as high as 22 mph.
• Juneteenth 2025-06-19, Mostly Sunny. Mostly sunny, with a high near 81. Calm wind becoming northwest 5 to 7 mph in the afternoon.
• Thursday Night 2025-06-19, Chance T-storms then Chance Rain. A chance of showers and thunderstorms before midnight, then a chance of rain after midnight. Mostly cloudy, with a low around 45. North wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 30%.
• Friday 2025-06-20, Chance Showers then Showers Likely. A chance of showers and thunderstorms before noon, then rain likely between noon and 3pm, then showers likely and possibly a thunderstorm after 3pm. Partly sunny, with a high near 73. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
• Friday Night 2025-06-20, Showers Likely. Showers likely and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 40. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
• Saturday 2025-06-21, Showers. A chance of showers and thunderstorms, then showers and possibly a thunderstorm after noon. Mostly cloudy, with a high near 61.
• Saturday Night 2025-06-21, Showers Likely. Showers likely and possibly a thunderstorm before midnight, then rain likely after midnight. Mostly cloudy, with a low around 35.
• Sunday 2025-06-22, Showers Likely. Rain likely before noon, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 55.
• Sunday Night 2025-06-22, Chance Showers then Partly Cloudy. A chance of showers and thunderstorms. Mostly cloudy, with a low around 32.
• Monday 2025-06-23, Mostly Sunny then Chance Showers. A chance of showers and thunderstorms. Mostly sunny, with a high near 64.
• Monday Night 2025-06-23, Mostly Clear. Mostly clear, with a low around 35.
• Tuesday 2025-06-24, Sunny then Slight Chance T-storms. A slight chance of showers and thunderstorms. Sunny, with a high near 73.