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Tunnel Lake, MT Weather Forecast
Tunnel Lake, MT Weather Forecast Date: 947 PM MDT Sat Aug 29 2026
The area/counties/county of: Southern High Plains, including the cities of: Bynum, Choteau, and Pendroy.or toggle through each period.
Rest of Tonight... Cooler. Mostly cloudy. Chance of thunderstorms through the night. Rain showers likely after midnight. Lows in the upper 40s. West winds 5 to 10 mph. Gusts up to 30 mph after midnight. Chance of precipitation 70%.
Sunday... Breezy. Much cooler. Mostly sunny. Highs around 60. Southwest winds 5 to 15 mph increasing to west 15 to 25 mph in the afternoon. Gusts up to 45 mph.
Sunday Night... Breezy. Mostly clear. Lows in the mid 40s. West winds 15 to 25 mph becoming southwest 5 to 15 mph after midnight. Gusts up to 45 mph.
Monday... Warmer, sunny. Highs in the mid 70s. Southwest winds 5 to 10 mph. Gusts up to 30 mph in the morning.
Monday Night... Mostly clear. Lows in the upper 40s. West winds up to 10 mph.
Tuesday... Sunny. Highs in the lower 80s.
Tuesday Night... Mostly cloudy. A 40% chance of rain showers. Lows in the lower 50s. Highs in the mid 70s.
Wednesday... Mostly cloudy. A 40% chance of rain showers. Lows in the lower 50s. Highs in the mid 70s.
Wednesday Night... Mostly cloudy. A 20% chance of rain showers in the evening. Lows around 50.
Thursday... Mostly sunny. A 20% chance of rain showers in the afternoon. Highs in the lower 70s.
Thursday Night... Mostly cloudy with a 20% chance of rain showers. Lows in the mid 40s.
Friday... Sunny. A 20% chance of rain showers in the morning. Highs around 70.
Friday Night... Partly cloudy. A 20% chance of rain showers. Lows in the upper 40s. Highs in the upper 60s.
POP = Probability of Precipitation
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