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St. Mary's School, MT Weather Forecast
St. Mary's School, MT Weather Forecast Date: 336 PM MDT Tue Oct 06 2026
The area/counties/county of: Cascade County Below 5000ft, including the city of Great Falls.or toggle through each period.
Tonight... Partly cloudy. Lows in the mid 40s. Southwest winds up to 10 mph.
Wednesday... Mostly sunny. Highs in the lower 70s. West winds up to 5 mph shifting to the north in the afternoon.
Wednesday Night... Partly cloudy. Lows 42 to 48. East winds up to 5 mph shifting to the southwest after midnight.
Thursday... Sunny. Highs in the upper 70s. Southwest winds up to 10 mph.
Thursday Night... Partly cloudy. Lows in the lower 50s. Southwest winds up to 10 mph increasing to 10 to 15 mph with gusts to around 30 mph after midnight.
Friday... Windy. Mostly sunny. Highs in the upper 70s.
Friday Night... Colder. Mostly cloudy. Lows in the lower 40s.
Saturday... Much cooler. Mostly cloudy. Chance of rain in the morning, then rain likely in the afternoon. Highs in the lower 50s. Chance of rain 70%.
Saturday Night... Breezy, colder. Snow and rain in the evening, then snow after midnight. Moderate snow accumulations. Lows around 30. Chance of precipitation near 100%.
Sunday... Colder. Snow in the morning, then snow likely in the afternoon. Moderate snow accumulations. Near steady temperature in the lower 30s. Chance of snow 90%.
Sunday Night... Mostly cloudy with a 50% chance of snow. Lows in the mid 20s.
Columbus Day... Partly sunny. A 20% chance of snow in the morning. Highs around 40.
Monday Night... Partly cloudy. A 20% chance of rain and snow. Lows in the upper 20s. Highs in the upper 40s.
POP = Probability of Precipitation
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