7-Day Forecast Summary
7-Day Detailed Weather Forecast for San Juan
This Afternoon |
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Temperature: 90°F Wind Speed: 13 mph Wind Direction: E Forecast: Showers and thunderstorms before 5pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 90. East wind around 13 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. |
Tonight |
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Temperature: 78°F Wind Speed: 5 to 13 mph Wind Direction: E Forecast: A chance of showers and thunderstorms before 8pm, then a chance of showers and thunderstorms between 8pm and 9pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 78. East wind 5 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 40%. New rainfall amounts between a quarter and half of an inch possible. |
Sunday |
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Temperature: 90°F Wind Speed: 5 to 13 mph Wind Direction: ESE Forecast: A chance of rain showers before 10am, then a chance of showers and thunderstorms between 10am and noon, then showers and thunderstorms likely between noon and 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 90. East southeast wind 5 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible. |
Sunday Night |
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Temperature: 78°F Wind Speed: 7 to 14 mph Wind Direction: SE Forecast: A slight chance of showers and thunderstorms between 1am and 2am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 78. Southeast wind 7 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 50%. |
Monday |
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Temperature: 88°F Wind Speed: 7 to 10 mph Wind Direction: SE Forecast: Showers and thunderstorms likely. Partly sunny, with a high near 88. Southeast wind 7 to 10 mph. Chance of precipitation is 70%. |
Monday Night |
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Temperature: 77°F Wind Speed: 8 to 12 mph Wind Direction: SE Forecast: Showers and thunderstorms. Mostly cloudy, with a low around 77. Southeast wind 8 to 12 mph. Chance of precipitation is 90%. |
Tuesday |
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Temperature: 86°F Wind Speed: 9 mph Wind Direction: SE Forecast: Showers and thunderstorms. Mostly cloudy, with a high near 86. Southeast wind around 9 mph. Chance of precipitation is 90%. |
Tuesday Night |
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Temperature: 76°F Wind Speed: 6 to 9 mph Wind Direction: SSE Forecast: Showers and thunderstorms. Mostly cloudy, with a low around 76. South southeast wind 6 to 9 mph. Chance of precipitation is 90%. |
Wednesday |
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Temperature: 89°F Wind Speed: 9 mph Wind Direction: SSE Forecast: Showers and thunderstorms likely before 7am, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 89. South southeast wind around 9 mph. Chance of precipitation is 70%. |
Wednesday Night |
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Temperature: 79°F Wind Speed: 13 mph Wind Direction: SSE Forecast: A chance of showers and thunderstorms. Mostly cloudy, with a low around 79. South southeast wind around 13 mph, with gusts as high as 24 mph. Chance of precipitation is 30%. |
Thursday |
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Temperature: 96°F Wind Speed: 12 to 15 mph Wind Direction: SSE Forecast: A slight chance of rain showers before 7am. Mostly sunny, with a high near 96. South southeast wind 12 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%. |
Thursday Night |
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Temperature: 81°F Wind Speed: 13 to 16 mph Wind Direction: SE Forecast: A slight chance of rain showers after 1am. Partly cloudy, with a low around 81. Chance of precipitation is 20%. |
Juneteenth |
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Temperature: 95°F Wind Speed: 15 mph Wind Direction: SE Forecast: A slight chance of rain showers before 7am, then a slight chance of showers and thunderstorms between 7am and 1pm. Mostly sunny, with a high near 95. Chance of precipitation is 20%. |
Friday Night |
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Temperature: 80°F Wind Speed: 10 to 14 mph Wind Direction: SE Forecast: Partly cloudy, with a low around 80. |

