| NWS Forecast for: Big Belt, Bridger and Castle Mountains Issued by: National Weather Service Great Falls, MT Last Update: 200 PM MDT Fri Oct 3 2025 |  |
| Tonight: Colder. Mostly cloudy. Chance of rain in the evening, then slight chance of rain after midnight. Lows 40 to 45. Northwest winds up to 10 mph. Chance of rain 50 percent. Saturday: Cooler. Mostly cloudy with a 50 percent chance of rain. Highs 45 to 50. North winds 5 to 15 mph. Saturday Night: Colder. Rain and snow likely in the evening, then rain and snow after midnight. Snow accumulation up to 2 inches. Lows 30 to 35. Northwest winds 5 to 10 mph. Chance of precipitation 90 percent. Sunday: Cloudy. Snow with rain likely in the morning, then chance of snow in the afternoon. Moderate snow accumulations. Highs 35 to 40. North winds 5 to 15 mph. Chance of precipitation 80 percent. Sunday Night: Mostly cloudy with a 20 percent chance of snow in the evening, then partly cloudy after midnight. Lows 25 to 30. Northeast winds up to 10 mph shifting to the southeast after midnight. Monday: Not as cool. Sunny. Highs 45 to 50. Monday Night Through Tuesday Night: Clear. Lows 30 to 40. Highs 50 to 60. Wednesday: Sunny. Highs 55 to 65. Wednesday Night: Mostly clear. Lows 35 to 40. Thursday: Sunny with a 20 percent chance of rain. Highs 55 to 60. Thursday Night And Friday: Partly cloudy with a 20 percent chance of rain. Lows 35 to 40. Highs 55 to 60. | |
| Zone Forecast: Big Belt, Bridger and Castle Mountains | |
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