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Ismay, MT Weather Forecast
Ismay, MT Weather Forecast Date: 350 PM MDT Sat Sep 12 2026
The area/counties/county of: Custer, including the city of Miles City.or toggle through each period.
Tonight... Mostly cloudy. Lows in the mid 40s. Northeast winds 5 to 15 mph.
Sunday... Sunny, warmer. Highs in the mid 70s. East winds 15 to 25 mph.
Sunday Night... Mostly cloudy. Chance of rain showers and slight chance of thunderstorms overnight. Lows in the lower 50s. Southeast winds 15 to 25 mph in the evening shifting to the southwest 10 to 20 mph overnight. Chance of precipitation 50%.
Monday... Mostly sunny. Highs in the upper 60s. West winds 15 to 25 mph. Gusts up to 45 mph in the afternoon.
Monday Night... Mostly clear. Lows in the mid 40s. Northwest winds 15 to 25 mph with gusts to around 40 mph in the evening becoming west 5 to 15 mph overnight.
Tuesday... Sunny. Highs around 70.
Tuesday Night... Partly cloudy. A 20% chance of rain showers overnight. Lows in the upper 40s.
Wednesday... Mostly sunny. Highs in the lower 70s.
Wednesday Night... Mostly clear. Lows in the mid 40s.
Thursday... Sunny. Highs in the mid 70s.
Thursday Night... Mostly clear. A 20% chance of rain showers overnight. Lows in the upper 40s.
Friday... Mostly sunny with a 20% chance of rain showers. Highs in the upper 70s.
Friday Night... Mostly clear with a 20% chance of rain showers. Lows in the upper 40s.
POP = Probability of Precipitation
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