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Chalk Butte Reservoir, MT Weather Forecast
Chalk Butte Reservoir, MT Weather Forecast Date: 1148 PM MDT Thu Aug 06 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... Mostly cloudy. Areas of smoke late in the evening, then patchy smoke after 3 am. Lows in the upper 50s. Southeast winds 5 to 10 mph.
Friday... Partly sunny. Patchy smoke in the morning and early afternoon, then areas of smoke late in the afternoon. Highs in the mid 90s. Southeast winds 5 to 10 mph in the morning shifting to the northwest in the afternoon.
Friday Night... Mostly cloudy. Areas of smoke early in the evening, then patchy smoke late in the evening. Areas of smoke overnight. Lows in the upper 50s. Northeast winds 5 to 10 mph in the evening shifting to the southeast overnight.
Saturday... Partly sunny. Patchy smoke in the morning, then areas of smoke in the afternoon. Highs in the upper 90s. Southwest winds 5 to 10 mph in the morning shifting to the northwest 5 to 15 mph in the afternoon.
Saturday Night... Partly cloudy. Patchy smoke early in the evening. Lows in the lower 60s. Northeast winds 5 to 15 mph in the evening shifting to the southeast 5 to 10 mph overnight.
Sunday... Mostly sunny. Highs in the mid 90s.
Sunday Night... Partly cloudy. Lows in the upper 50s.
Monday... Sunny. Highs in the mid 90s.
Monday Night... Partly cloudy. Lows in the upper 50s.
Tuesday... Mostly sunny. Highs in the lower 90s.
Tuesday Night... Partly cloudy. Lows in the upper 50s.
Wednesday... Mostly sunny. A 20% chance of showers and thunderstorms in the afternoon. Highs in the upper 80s.
Wednesday Night... Partly cloudy. Chance of rain showers and slight chance of thunderstorms in the evening, then slight chance of rain showers overnight. Lows in the mid 50s. Chance of precipitation 30%.
POP = Probability of Precipitation
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