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Ulm, MT Weather Forecast
Ulm, MT Weather Forecast Date: 552 PM MDT Sun Sep 13 2026
The area/counties/county of: Cascade County Below 5000ft, including the city of Great Falls.or toggle through each period.
Tonight... Mostly cloudy. Rain showers likely and slight chance of thunderstorms in the evening, then chance of rain showers after midnight. Slight chance of rain showers late in the night. Lows in the mid 40s. Northwest winds 5 to 10 mph shifting to the southwest 5 to 15 mph with gusts to around 35 mph after midnight. Chance of precipitation 70%.
Monday... Windy. Mostly cloudy with a 50% chance of rain showers. Highs 59 to 65. West winds 20 to 30 mph with gusts to around 45 mph.
Monday Night... Mostly cloudy in the evening then becoming partly cloudy. Lows in the lower 40s. West winds 5 to 10 mph with gusts to around 25 mph shifting to the south after midnight.
Tuesday... Partly sunny. Highs in the mid 60s. Southeast winds up to 5 mph shifting to the northeast in the afternoon.
Tuesday Night... Mostly cloudy. A 20% chance of rain showers after midnight. Lows in the mid 40s. North winds up to 15 mph.
Wednesday... Mostly sunny. Highs in the mid 60s.
Wednesday Night... Mostly clear. Lows in the mid 40s. Highs in the lower 70s.
Thursday... Mostly clear. Lows in the mid 40s. Highs in the lower 70s.
Thursday Night... Partly cloudy. A 20% chance of rain showers. Lows in the upper 40s. Highs around 70.
Friday... Partly cloudy. A 20% chance of rain showers. Lows in the upper 40s. Highs around 70.
Friday Night... Mostly cloudy with chance of rain showers in the evening, then partly cloudy with slight chance of rain showers after midnight. Lows in the upper 40s. Chance of showers 40%.
Saturday... Partly cloudy. A 20% chance of rain showers. Highs in the lower 70s. Lows in the upper 40s.
Saturday Night... Partly cloudy. A 20% chance of rain showers. Highs in the lower 70s. Lows in the upper 40s.
POP = Probability of Precipitation
Ulm Radar Loop
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