| NWS Forecast for: Lewistown 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 wind around 5 mph. Sunday: Sunny, with a high near 90. South wind 6 to 8 mph becoming northwest in the afternoon. Sunday Night: Mostly clear, with a low around 56. 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 87. Light and variable wind becoming north northwest 5 to 10 mph in the morning. 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 7 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 59. East northeast wind 7 to 10 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 65. East northeast wind 5 to 7 mph. Wednesday Night: Partly cloudy, with a low around 43. Thursday: Sunny, with a high near 75. Thursday Night: Partly cloudy, with a low around 49. Friday: Mostly sunny, with a high near 81. Friday Night: Mostly clear, with a low around 52. Saturday: Sunny, with a high near 86. | |
| Lewistown MT 47.07°N 109.43°W (Elev. 3898 ft) | |
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