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: Rain 54°F 2025-06-20T19:15:00
Tonight 2025-06-20, Showers. Showers and possibly a thunderstorm. Low around 46. West southwest wind 8 to 13 mph becoming southwest 16 to 21 mph after midnight. Winds could gust as high as 29 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, Chance Rain and Breezy then Slight Chance T-storms and Windy. A chance of rain before noon, then a slight chance of showers and thunderstorms after noon. Partly sunny, with a high near 65. Windy, with a southwest wind 21 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 40%.
Saturday Night 2025-06-21, Chance Rain and Breezy then Rain. Rain, mainly after 1am. Low around 40. Breezy, with a west northwest wind 21 to 26 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 37 mph. Chance of precipitation is 90%.
Sunday 2025-06-22, Rain. Rain. High near 50. North wind 10 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 90%.
Sunday Night 2025-06-22, Chance Showers then Partly Cloudy. A 30 percent chance of showers before midnight. Mostly cloudy, with a low around 37. West wind 6 to 8 mph becoming south southwest after midnight.
Monday 2025-06-23, Mostly Sunny then Chance Showers. A 40 percent chance of showers after noon. Mostly sunny, with a high near 69. South southwest wind 6 to 10 mph, with gusts as high as 18 mph.
Monday Night 2025-06-23, Slight Chance T-storms then Mostly Clear. A 20 percent chance of showers and thunderstorms before midnight. Mostly clear, with a low around 42. Northwest wind 5 to 7 mph becoming calm after midnight.
Tuesday 2025-06-24, Sunny. Sunny, with a high near 77. Calm wind becoming west around 6 mph in the afternoon.
Tuesday Night 2025-06-24, Mostly Clear. Mostly clear, with a low around 47.
Wednesday 2025-06-25, Sunny. Sunny, with a high near 83.
Wednesday Night 2025-06-25, Partly Cloudy. Partly cloudy, with a low around 51.
Thursday 2025-06-26, Mostly Sunny then Slight Chance T-storms. A slight chance of showers and thunderstorms. Mostly sunny, with a high near 85.
Thursday Night 2025-06-26, Partly Cloudy. Partly cloudy, with a low around 52.
Friday 2025-06-27, Mostly Sunny then Slight Chance T-storms. A slight chance of showers and thunderstorms. Mostly sunny, with a high near 83.