National Weather Service Forecast for:
Lewistown MT Issued by: National Weather Service Great Falls, MT |
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Updated: 5:41 am MDT Jun 10, 2025 | ||||||||||||||||||
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Today |
A 20 percent chance of showers and thunderstorms after 3pm. Sunny, with a high near 82. Light and variable wind becoming north northeast around 6 mph in the afternoon. |
Tonight |
A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 5am. Mostly cloudy, with a low around 52. East southeast wind 5 to 7 mph. Chance of precipitation is 40%. |
Wednesday |
A 50 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 78. East southeast wind 5 to 8 mph becoming north northeast in the morning. |
Wednesday Night |
Showers and possibly a thunderstorm. Low around 51. East wind 5 to 8 mph becoming north northeast after midnight. Chance of precipitation is 80%. |
Thursday |
A chance of showers, then showers and possibly a thunderstorm after noon. High near 67. Northeast wind 3 to 7 mph. Chance of precipitation is 80%. |
Thursday Night |
A chance of showers and thunderstorms. Mostly cloudy, with a low around 48. East wind 5 to 8 mph. Chance of precipitation is 40%. |
Friday |
A 50 percent chance of showers and thunderstorms after noon. Partly sunny, with a high near 75. Southeast wind around 6 mph. |
Friday Night |
Showers likely and possibly a thunderstorm before midnight, then a chance of showers. Mostly cloudy, with a low around 50. East southeast wind 5 to 8 mph becoming light and variable after midnight. |
Saturday |
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 77. |
Saturday Night |
A chance of showers and thunderstorms. Mostly cloudy, with a low around 51. |
Sunday |
A chance of showers and thunderstorms. Partly sunny, with a high near 75. |
Sunday Night |
A chance of showers and thunderstorms. Mostly cloudy, with a low around 48. |
Monday |
A chance of showers and thunderstorms. Partly sunny, with a high near 73. |
Forecast from NOAA-NWS for Lewistown MT.