7-Day Forecast Summary
7-Day Detailed Weather Forecast for San Marcos
This Afternoon |
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Temperature: 98°F Wind Speed: 5 mph Wind Direction: SSE Forecast: Sunny, with a high near 98. Heat index values as high as 104. South southeast wind around 5 mph. |
Tonight |
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Temperature: 75°F Wind Speed: 5 mph Wind Direction: SSE Forecast: Mostly clear, with a low around 75. South southeast wind around 5 mph. |
Sunday |
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Temperature: 98°F Wind Speed: 0 to 5 mph Wind Direction: S Forecast: Sunny, with a high near 98. Heat index values as high as 104. South wind 0 to 5 mph. |
Sunday Night |
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Temperature: 75°F Wind Speed: 5 to 10 mph Wind Direction: SSE Forecast: Mostly clear, with a low around 75. Heat index values as high as 100. South southeast wind 5 to 10 mph. |
Monday |
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Temperature: 98°F Wind Speed: 0 to 5 mph Wind Direction: S Forecast: Sunny, with a high near 98. South wind 0 to 5 mph. |
Monday Night |
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Temperature: 76°F Wind Speed: 0 to 5 mph Wind Direction: SSE Forecast: Mostly clear, with a low around 76. South southeast wind 0 to 5 mph. |
Tuesday |
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Temperature: 97°F Wind Speed: 0 to 5 mph Wind Direction: S Forecast: Sunny, with a high near 97. South wind 0 to 5 mph. |
Tuesday Night |
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Temperature: 76°F Wind Speed: 0 to 5 mph Wind Direction: SSE Forecast: Mostly clear, with a low around 76. South southeast wind 0 to 5 mph. |
Wednesday |
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Temperature: 98°F Wind Speed: 0 to 5 mph Wind Direction: S Forecast: Sunny, with a high near 98. South wind 0 to 5 mph. |
Wednesday Night |
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Temperature: 76°F Wind Speed: 0 to 5 mph Wind Direction: SSE Forecast: Mostly clear, with a low around 76. |
Thursday |
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Temperature: 99°F Wind Speed: 0 to 5 mph Wind Direction: S Forecast: Sunny, with a high near 99. |
Thursday Night |
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Temperature: 76°F Wind Speed: 0 to 5 mph Wind Direction: SSE Forecast: Mostly clear, with a low around 76. |
Friday |
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Temperature: 98°F Wind Speed: 0 to 5 mph Wind Direction: SSE Forecast: Mostly sunny, with a high near 98. |
Friday Night |
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Temperature: 77°F Wind Speed: 0 to 5 mph Wind Direction: SSE Forecast: Mostly clear, with a low around 77. |

