| NWS Forecast for: Lewistown Municipal MT Issued by: National Weather Service Great Falls, MT Last Update: 8:28 pm MDT Jul 12, 2025 | |
| Tonight: Mostly clear, with a low around 55. South southwest wind around 7 mph. Sunday: Sunny, with a high near 88. South southwest wind 6 to 8 mph becoming northwest in the afternoon. Sunday Night: Mostly clear, with a low around 56. North northwest wind 5 to 7 mph becoming southeast in the evening. Monday: A 20 percent chance of showers after noon. Sunny, with a high near 86. South southwest wind 5 to 10 mph becoming north northwest in the afternoon. Winds could gust as high as 20 mph. Monday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 49. North wind 8 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. Tuesday: Showers likely and possibly a thunderstorm before noon, then showers between noon and 3pm, then showers and possibly a thunderstorm after 3pm. High near 58. East northeast wind 7 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. Tuesday Night: Showers likely and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 45. East northeast wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. Wednesday: A chance of showers. Partly sunny, with a high near 63. East northeast wind around 7 mph. Wednesday Night: Partly cloudy, with a low around 43. Thursday: Sunny, with a high near 74. Thursday Night: Partly cloudy, with a low around 49. Friday: Mostly sunny, with a high near 79. Friday Night: Mostly clear, with a low around 51. Saturday: Sunny, with a high near 84. | |
| Lewistown Municipal MT 47.04°N 109.45°W (Elev. 4111 ft) | |
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