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Big Sky, MT Weather Forecast Date: 1011 AM MDT Sat Sep 19 2026
Weather forecast for Big Sky, MT
Today Hi: 49°FHi: 9°C Lo: 39°F Lo: 4°C |
Rest of Today... Patchy fog late in the morning. Slight chance of thunderstorms late in the morning. Rain showers through the day. Chance of thunderstorms in the afternoon. Near steady temperature in the upper 40s. Northwest winds up to 10 mph. Chance of precipitation near 100%. |
Sun Hi: 56°FHi: 13°C Lo: 38°F Lo: 3°C |
Sunday... Not as cool. Partly sunny. Patchy fog in the morning. Highs 50 to 60. Northwest winds up to 10 mph. |
Mon Hi: 64°FHi: 18°C Lo: 42°F Lo: 6°C |
Monday... Warmer, sunny. Highs 58 to 68. South winds up to 5 mph shifting to the southwest in the afternoon. |
| Tue Hi: 65°FHi: 18°C Lo: 44°F Lo: 7°C |
Tuesday... Mostly clear. Lows 38 to 44. Highs 59 to 69. |
| Wed Hi: 66°FHi: 19°C Lo: 44°F Lo: 7°C |
Wednesday... Mostly clear. Highs 60 to 71. Lows 39 to 48. |
| Thu Hi: 66°FHi: 19°C Lo: 44°F Lo: 7°C |
Thursday... Mostly clear. Highs 60 to 71. Lows 39 to 48. |
| Thu Hi: 66°FHi: 19°C Lo: 44°F Lo: 7°C |
Thursday... Mostly clear. Highs 60 to 71. Lows 39 to 48. |
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