| NWS Forecast for: Southern Rocky Mountain Front Issued by: National Weather Service Great Falls, MT Last Update: 1232 AM MDT Tue Aug 18 2026 |  |
| Rest Of Tonight: Partly cloudy. A 20 percent chance of thunderstorms. Highs 64 to 74. Lows 46 to 52. West winds up to 15 mph with gusts to around 30 mph. Wednesday: Sunny. Patchy smoke in the afternoon. Highs 67 to 77. West winds 5 to 15 mph. Wednesday Night: Mostly clear. Lows 47 to 53. West winds up to 10 mph. Gusts up to 25 mph in the evening. Thursday And Thursday Night: Mostly clear. Highs 69 to 79. Lows 48 to 54. West winds up to 10 mph. Friday: Mostly sunny. Highs 70 to 80. Friday Night: Mostly cloudy. Slight chance of thunderstorms in the evening, then slight chance of rain showers after midnight. Lows 52 to 58. Chance of precipitation 20 percent. Saturday: Partly sunny. Slight chance of rain showers in the morning, then chance of rain showers and slight chance of thunderstorms in the afternoon. Highs 68 to 78. Chance of precipitation 40 percent. Saturday Night: Partly cloudy. A 20 percent chance of thunderstorms in the evening. Lows 47 to 53. Sunday Through Monday Night: Mostly clear. Highs 63 to 76. Lows in the upper 40s. Tuesday: Sunny. A 20 percent chance of thunderstorms in the afternoon. Highs 68 to 78. | |
| Zone Forecast: Southern Rocky Mountain Front | |
Visit your local NWS office at: https://www.weather.gov/tfx |