7-Day Forecast Summary
7-Day Detailed Weather Forecast for Fairfax
Overnight |
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Temperature: 73°F Wind Speed: 0 mph Wind Direction: Forecast: Patchy fog after 5am. Mostly clear, with a low around 73. Wind around 0 mph. |
Saturday |
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Temperature: 95°F Wind Speed: 1 mph Wind Direction: SW Forecast: Patchy fog before 9am. Sunny, with a high near 95. Heat index values as high as 103. Southwest wind around 1 mph. |
Saturday Night |
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Temperature: 75°F Wind Speed: 1 mph Wind Direction: SW Forecast: Partly cloudy, with a low around 75. Southwest wind around 1 mph. |
Sunday |
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Temperature: 94°F Wind Speed: 1 mph Wind Direction: W Forecast: Showers and thunderstorms after 2pm. Mostly sunny, with a high near 94. Heat index values as high as 102. West wind around 1 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible. |
Sunday Night |
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Temperature: 72°F Wind Speed: 1 mph Wind Direction: SE Forecast: Showers and thunderstorms. Mostly cloudy, with a low around 72. Southeast wind around 1 mph. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible. |
Labor Day |
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Temperature: 86°F Wind Speed: 2 to 7 mph Wind Direction: NE Forecast: A chance of rain showers before 2pm, then showers and thunderstorms likely. Partly sunny, with a high near 86. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible. |
Monday Night |
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Temperature: 71°F Wind Speed: 5 mph Wind Direction: NE Forecast: Showers and thunderstorms likely before 8pm. Partly cloudy, with a low around 71. Chance of precipitation is 60%. |
Tuesday |
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Temperature: 87°F Wind Speed: 2 to 7 mph Wind Direction: NE Forecast: A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 87. Chance of precipitation is 30%. |
Tuesday Night |
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Temperature: 70°F Wind Speed: 0 to 5 mph Wind Direction: NE Forecast: A chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 70. Chance of precipitation is 30%. |
Wednesday |
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Temperature: 88°F Wind Speed: 0 to 3 mph Wind Direction: E Forecast: A slight chance of rain showers between 8am and 2pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 88. Chance of precipitation is 20%. |
Wednesday Night |
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Temperature: 70°F Wind Speed: 2 mph Wind Direction: E Forecast: A slight chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 70. Chance of precipitation is 20%. |
Thursday |
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Temperature: 92°F Wind Speed: 1 mph Wind Direction: W Forecast: Sunny, with a high near 92. |
Thursday Night |
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Temperature: 73°F Wind Speed: 1 mph Wind Direction: SW Forecast: Mostly clear, with a low around 73. |
Friday |
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Temperature: 94°F Wind Speed: 2 mph Wind Direction: W Forecast: A slight chance of showers and thunderstorms after 2pm. Sunny, with a high near 94. Chance of precipitation is 20%. |

