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Grassy Lake, MT Weather Forecast
Grassy Lake, MT Weather Forecast Date: 327 AM MDT Sat Aug 08 2026
The area/counties/county of: Southern Rocky Mountain Front, including the city of Rogers Pass.or toggle through each period.
Today... Sunny. Patchy smoke. Highs 72 to 82. West winds 5 to 15 mph with gusts to around 30 mph.
Tonight... Partly cloudy. Patchy smoke in the evening, then areas of smoke after midnight. Lows 49 to 55. West winds up to 10 mph with gusts to around 25 mph.
Sunday... Mostly sunny. Areas of smoke in the morning, then patchy smoke in the afternoon. Highs 69 to 79. West winds up to 10 mph.
Sunday Night... Mostly clear. Patchy smoke in the evening. Lows 47 to 53. North winds up to 10 mph shifting to the west after midnight.
Monday... Sunny. Highs 68 to 80. West winds up to 5 mph increasing to 5 to 15 mph in the afternoon.
Monday Night... Mostly clear. Lows 46 to 53. Highs 67 to 77.
Tuesday... Mostly clear. Lows 46 to 53. Highs 67 to 77.
Wednesday... Mostly sunny. Slight chance of rain showers in the morning, then chance of rain showers and slight chance of thunderstorms in the afternoon. Highs 60 to 70. Chance of precipitation 50%.
Wednesday Night... Mostly cloudy. Chance of rain showers and slight chance of thunderstorms in the evening, then chance of rain showers after midnight. Lows 42 to 48. Chance of precipitation 50%.
Thursday... Mostly cloudy. Chance of rain showers in the morning, then rain showers likely and slight chance of thunderstorms in the afternoon. Highs 53 to 63. Chance of precipitation 70%.
Thursday Night... Mostly cloudy. Chance of rain showers and slight chance of thunderstorms in the evening, then slight chance of rain showers after midnight. Lows 39 to 45. Chance of precipitation 40%.
POP = Probability of Precipitation
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