7-Day Forecast Summary
7-Day Detailed Weather Forecast for Diamond Bar
Today |
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Temperature: 85°F Wind Speed: 5 to 10 mph Wind Direction: SW Forecast: Mostly sunny, with a high near 85. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. |
Tonight |
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Temperature: 58°F Wind Speed: 5 to 10 mph Wind Direction: SSW Forecast: Clear, with a low around 58. South southwest wind 5 to 10 mph. |
Wednesday |
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Temperature: 83°F Wind Speed: 5 to 10 mph Wind Direction: SSW Forecast: Sunny, with a high near 83. South southwest wind 5 to 10 mph. |
Wednesday Night |
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Temperature: 58°F Wind Speed: 5 to 10 mph Wind Direction: SSW Forecast: Clear, with a low around 58. South southwest wind 5 to 10 mph. |
Thursday |
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Temperature: 83°F Wind Speed: 5 to 10 mph Wind Direction: S Forecast: Sunny, with a high near 83. South wind 5 to 10 mph. |
Thursday Night |
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Temperature: 59°F Wind Speed: 0 to 10 mph Wind Direction: S Forecast: Mostly clear, with a low around 59. |
Friday |
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Temperature: 83°F Wind Speed: 0 to 10 mph Wind Direction: S Forecast: Sunny, with a high near 83. |
Friday Night |
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Temperature: 61°F Wind Speed: 5 to 10 mph Wind Direction: S Forecast: A slight chance of rain showers after 5am. Mostly clear, with a low around 61. |
Saturday |
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Temperature: 85°F Wind Speed: 0 to 10 mph Wind Direction: S Forecast: A chance of rain showers. Partly sunny, with a high near 85. |
Saturday Night |
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Temperature: 66°F Wind Speed: 0 to 15 mph Wind Direction: SE Forecast: A chance of rain showers. Mostly cloudy, with a low around 66. |
Sunday |
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Temperature: 88°F Wind Speed: 0 to 10 mph Wind Direction: SE Forecast: A chance of rain showers. Partly sunny, with a high near 88. |
Sunday Night |
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Temperature: 67°F Wind Speed: 0 to 10 mph Wind Direction: N Forecast: A chance of rain showers. Mostly cloudy, with a low around 67. |
Labor Day |
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Temperature: 88°F Wind Speed: 0 to 10 mph Wind Direction: SW Forecast: A chance of rain showers. Partly sunny, with a high near 88. |
Monday Night |
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Temperature: 67°F Wind Speed: 0 to 10 mph Wind Direction: WSW Forecast: A slight chance of rain showers. Partly cloudy, with a low around 67. |

