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Fort Smith, MT Weather Forecast
Fort Smith, MT Weather Forecast Date: 350 PM MDT Mon Sep 07 2026
The area/counties/county of: Southern Big Horn, including the cities of: Pryor and Lodge Grass.or toggle through each period.
Tonight... Mostly clear. Colder. Lows in the mid 40s. West winds 10 to 20 mph.
Tuesday... Sunny. Highs in the upper 70s. Northwest winds 10 to 20 mph.
Tuesday Night... Mostly clear. A 20% chance of rain showers in the evening. Lows in the mid 40s. Northwest winds 10 to 20 mph in the evening becoming south 5 to 10 mph overnight.
Wednesday... Sunny. Highs in the lower 80s. South winds 5 to 10 mph in the morning shifting to the northwest in the afternoon.
Wednesday Night... Mostly clear. Lows in the upper 40s. South winds 5 to 10 mph.
Thursday... Sunny. Highs around 90.
Thursday Night... Mostly clear. Lows around 50.
Friday... Mostly sunny. Highs in the upper 70s.
Friday Night... Partly cloudy. A 20% chance of rain showers in the evening. Lows in the lower 40s.
Saturday... Mostly sunny. A 20% chance of rain showers in the afternoon. Highs in the lower 70s.
Saturday Night... Mostly cloudy with a 40% chance of rain showers. Lows in the lower 40s.
Sunday... Partly sunny with a 30% chance of rain showers. Highs in the mid 60s.
Sunday Night... Mostly cloudy with a 40% chance of rain showers. Lows in the lower 40s.
POP = Probability of Precipitation
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