I-15 weather conditions near Great Falls, Montana
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Seasoned Weather Conditions
Current Weather Conditions
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7 day weather forecast
Current condition: Overcast 37°F 2025-10-14T20:15:00 Tonight 2025-10-14, Mostly Cloudy then Patchy Fog. Patchy fog before 1am, then patchy fog after 2am. Otherwise, mostly cloudy, with a low around 27. Calm wind.
Wednesday 2025-10-15, Chance Rain/Snow and Patchy Fog then Chance Rain. A slight chance of snow before 9am, then a chance of rain and snow between 9am and 10am, then a chance of rain after 10am. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 48. Calm wind. Chance of precipitation is 40%. Little or no snow accumulation expected.
Wednesday Night 2025-10-15, Rain Likely. Rain likely, mainly after midnight. Mostly cloudy, with a low around 36. Calm wind becoming west southwest around 5 mph after midnight. Chance of precipitation is 60%.
Thursday 2025-10-16, Chance Rain. A 50 percent chance of rain. Mostly cloudy, with a high near 55. West wind 6 to 8 mph.
Thursday Night 2025-10-16, Partly Cloudy. Partly cloudy, with a low around 37. Southwest wind 7 to 14 mph, with gusts as high as 23 mph.Friday 2025-10-17, Mostly Sunny then Slight Chance Rain. A 20 percent chance of rain after noon. Mostly sunny, with a high near 57. Southwest wind around 14 mph, with gusts as high as 25 mph.
Friday Night 2025-10-17, Chance Rain. A 40 percent chance of rain. Mostly cloudy, with a low around 32. West southwest wind around 10 mph, with gusts as high as 20 mph.
Saturday 2025-10-18, Mostly Sunny. Mostly sunny, with a high near 59. West southwest wind 10 to 15 mph, with gusts as high as 25 mph.Saturday Night 2025-10-18, Partly Cloudy then Slight Chance Rain. A slight chance of rain after midnight. Partly cloudy, with a low around 42.
Sunday 2025-10-19, Chance Rain. A chance of rain, mainly before noon. Partly sunny, with a high near 66.
Sunday Night 2025-10-19, Chance Rain. A chance of rain. Mostly cloudy, with a low around 38.- Monday 2025-10-20, Chance Rain. A chance of rain. Mostly cloudy, with a high near 55.
Monday Night 2025-10-20, Chance Rain then Slight Chance Rain/Snow. A chance of rain and snow. Mostly cloudy, with a low around 32.
Tuesday 2025-10-21, Partly Sunny. Partly sunny, with a high near 52.