| NWS Forecast for: Big Belt, Bridger and Castle Mountains Issued by: National Weather Service Great Falls, MT Last Update: 332 AM MDT Sun Jul 26 2026 |  |
| Today: Mostly sunny. Patchy smoke through the day. A 20 percent chance of thunderstorms late in the afternoon. Highs 80 to 90. Southwest winds up to 15 mph. Gusts up to 30 mph in the afternoon. Tonight: Mostly clear. A 20 percent chance of thunderstorms in the evening. Patchy smoke in the evening. Areas of smoke after midnight. Lows in the upper 50s. South winds 5 to 10 mph with gusts to around 25 mph shifting to the north after midnight. Monday: Sunny. Areas of smoke in the morning, then patchy smoke in the afternoon. Highs 80 to 90. East winds up to 5 mph shifting to the southwest with gusts to around 25 mph in the afternoon. Monday Night: Mostly clear. A 20 percent chance of rain showers in the evening. Lows in the upper 50s. Northeast winds up to 10 mph. Gusts up to 25 mph in the evening. Tuesday: Sunny. Highs 81 to 91. Southwest winds up to 10 mph. Gusts up to 30 mph in the afternoon. Tuesday Night Through Wednesday Night: Mostly clear. Lows in the upper 50s. Highs 79 to 89. Thursday: Sunny. Highs 81 to 91. Thursday Night Through Saturday: Mostly clear. Lows around 60. Highs 83 to 95. | |
| Zone Forecast: Big Belt, Bridger and Castle Mountains | |
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