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St. Xavier, MT Weather Forecast
St. Xavier, MT Weather Forecast Date: 1106 PM MDT Thu Sep 10 2026
The area/counties/county of: Southern Big Horn, including the cities of: Pryor and Lodge Grass.or toggle through each period.
Rest of Tonight... Partly cloudy. Lows in the upper 40s. Southeast winds 5 to 10 mph late in the evening shifting to the west overnight.
Friday... Mostly sunny. A 20% chance of rain showers late in the afternoon. Cooler. Highs in the mid 70s. North winds 5 to 15 mph.
Friday Night... Mostly cloudy. Slight chance of thunderstorms early in the evening. Chance of rain showers in the evening and overnight. Slight chance of rain showers after 3 am. Patchy fog overnight. Lows in the mid 40s. Northeast winds 5 to 10 mph. Chance of precipitation 40%.
Saturday... Decreasing clouds. Highs in the lower 70s. East winds 5 to 10 mph.
Saturday Night... Mostly cloudy. A 30% chance of rain showers overnight. Lows in the mid 40s. East winds 5 to 15 mph.
Sunday... Decreasing clouds. Slight chance of rain showers early in the afternoon. Slight chance of showers and thunderstorms late in the afternoon. Highs in the upper 70s. Chance of precipitation 20%.
Sunday Night... Mostly cloudy. Slight chance of thunderstorms early in the evening. Chance of rain showers in the evening, then slight chance of rain showers overnight. Lows in the mid 40s. Chance of precipitation 50%.
Monday... Sunny. Highs in the upper 60s.
Monday Night... Mostly clear. Lows in the upper 30s.
Tuesday... Sunny. Highs around 70.
Tuesday Night... Increasing clouds. Lows around 40.
Wednesday... Mostly sunny. Highs in the lower 70s.
Wednesday Night... Mostly clear. Lows in the lower 40s.
POP = Probability of Precipitation
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