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Sand Lake, MT Weather Forecast
Sand Lake, MT Weather Forecast Date: 357 AM MDT Wed Aug 12 2026
The area/counties/county of: Northwest Beaverhead County, including the cities of: Dewey, Wisdom, Wise River, Big Hole Pass, and Chief Joseph Pass.or toggle through each period.
Today... Partly sunny early in the morning then clearing. Smoke in the morning, then areas of smoke early in the afternoon. Patchy smoke late in the afternoon. A 20% chance of thunderstorms late in the afternoon. Highs 70 to 80. Southwest winds up to 10 mph. Gusts up to 25 mph in the afternoon.
Tonight... Mostly cloudy in the evening then becoming partly cloudy. Patchy smoke. Lows 40 to 50. North winds up to 10 mph shifting to the east after midnight. Gusts up to 25 mph.
Thursday... Mostly cloudy. Patchy smoke through the day. A 50% chance of thunderstorms in the afternoon. Highs 63 to 73. Southeast winds up to 10 mph shifting to the south in the afternoon.
Thursday Night... Cloudy. Rain showers and chance of thunderstorms in the evening, then chance of rain showers after midnight. Lows 41 to 49. Southeast winds up to 10 mph. Chance of precipitation 90%.
Friday... Mostly cloudy. Chance of rain showers in the morning, then rain showers and chance of thunderstorms in the afternoon. Highs 59 to 69. Southwest winds up to 10 mph. Chance of precipitation 90%.
Friday Night... Mostly cloudy. Rain showers likely and chance of thunderstorms. Lows 38 to 48. Highs 61 to 71. Chance of precipitation 70%.
Saturday... Mostly cloudy. Rain showers likely and chance of thunderstorms. Lows 38 to 48. Highs 61 to 71. Chance of precipitation 70%.
Saturday Night... Mostly cloudy. Chance of rain showers and slight chance of thunderstorms in the evening, then slight chance of rain showers after midnight. Lows 38 to 48. Chance of precipitation 50%.
Sunday... Mostly sunny. A 20% chance of thunderstorms in the afternoon. Highs 65 to 75.
Sunday Night... Mostly cloudy with a 20% chance of thunderstorms. Lows 41 to 51. Highs 66 to 76.
Monday... Mostly cloudy with a 20% chance of thunderstorms. Lows 41 to 51. Highs 66 to 76.
POP = Probability of Precipitation
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