7-Day Forecast Summary
7-Day Detailed Weather Forecast for Lewistown
Tonight |
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Temperature: 75°F Wind Speed: 6 mph Wind Direction: SSW Forecast: Mostly clear, with a low around 75. South southwest wind around 6 mph. |
Tuesday |
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Temperature: 97°F Wind Speed: 3 to 7 mph Wind Direction: WSW Forecast: Sunny, with a high near 97. Heat index values as high as 103. West southwest wind 3 to 7 mph. |
Tuesday Night |
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Temperature: 75°F Wind Speed: 3 mph Wind Direction: SSW Forecast: Clear, with a low around 75. Heat index values as high as 101. South southwest wind around 3 mph. |
Wednesday |
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Temperature: 98°F Wind Speed: 3 to 7 mph Wind Direction: SW Forecast: Sunny, with a high near 98. Heat index values as high as 104. Southwest wind 3 to 7 mph. |
Wednesday Night |
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Temperature: 77°F Wind Speed: 5 mph Wind Direction: SSW Forecast: Mostly clear, with a low around 77. South southwest wind around 5 mph. |
Thursday |
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Temperature: 96°F Wind Speed: 5 mph Wind Direction: SW Forecast: Sunny, with a high near 96. Southwest wind around 5 mph. |
Thursday Night |
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Temperature: 75°F Wind Speed: 2 mph Wind Direction: SSE Forecast: Mostly clear, with a low around 75. South southeast wind around 2 mph. |
Friday |
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Temperature: 93°F Wind Speed: 3 mph Wind Direction: S Forecast: Sunny, with a high near 93. |
Friday Night |
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Temperature: 72°F Wind Speed: 2 mph Wind Direction: ESE Forecast: A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 72. |
Saturday |
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Temperature: 92°F Wind Speed: 0 to 3 mph Wind Direction: E Forecast: A slight chance of showers and thunderstorms before 7am. Mostly sunny, with a high near 92. |
Saturday Night |
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Temperature: 69°F Wind Speed: 3 mph Wind Direction: E Forecast: Partly cloudy, with a low around 69. |
Sunday |
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Temperature: 87°F Wind Speed: 2 to 6 mph Wind Direction: E Forecast: Mostly sunny, with a high near 87. |
Sunday Night |
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Temperature: 66°F Wind Speed: 5 mph Wind Direction: E Forecast: Partly cloudy, with a low around 66. |
Labor Day |
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Temperature: 88°F Wind Speed: 5 mph Wind Direction: ESE Forecast: Mostly sunny, with a high near 88. |

