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Storms in the East; Monsoons and Fire Weather Out West

A slow moving frontal system will bring strong to severe storms, and, locally heavy rain from the Plains to the Northeast. Monsoon moisture shifts to the east into portions of the southern Plains and may produce excessive rains across portions of the High Plains and desert southwest. Fire Weather threats remain elevated to critical with isolated dry thunderstorms in the Intermountain West. Read More >

Hazardous Weather Conditions

Current conditions at

San Juan, Luis Munoz Marin International Airport (TJSJ)

Lat: 18.45°NLon: 66°WElev: 10ft.

A Few Clouds

80°F

27°C

Humidity 87%
Wind Speed E 3 mph
Barometer 30.10 in (1019.2 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 16 Aug 10:56 pm AST
Extended Forecast for

San Juan PRSimilar City Names

  • Tonight

    Tonight: Scattered showers, mainly before midnight. Partly cloudy, with a low around 79. East wind 8 to 10 mph. Chance of precipitation is 40%.

    Scattered
    Showers

    Low: 79 °F

  • Friday

    Friday: Scattered showers, with thunderstorms also possible after noon. Partly sunny, with a high near 90. East northeast wind 11 to 17 mph. Chance of precipitation is 40%.

    Scattered
    Showers

    High: 90 °F

  • Friday
    Night

    Friday Night: Scattered showers. Partly cloudy, with a low around 79. East wind 9 to 11 mph. Chance of precipitation is 40%.

    Scattered
    Showers

    Low: 79 °F

  • Saturday

    Saturday: Isolated showers. Sunny, with a high near 92. East wind 14 to 17 mph. Chance of precipitation is 20%.

    Isolated
    Showers

    High: 92 °F

  • Saturday
    Night

    Saturday Night: Isolated showers. Mostly clear, with a low around 77. East wind 8 to 11 mph. Chance of precipitation is 10%.

    Isolated
    Showers

    Low: 77 °F

  • Sunday

    Sunday: Isolated showers, then scattered showers and thunderstorms after noon. Mostly sunny, with a high near 88. East wind 14 to 17 mph. Chance of precipitation is 40%.

    Scattered
    Showers

    High: 88 °F

  • Sunday
    Night

    Sunday Night: Scattered showers. Partly cloudy, with a low around 79. East wind around 13 mph. Chance of precipitation is 40%.

    Scattered
    Showers

    Low: 79 °F

  • Monday

    Monday: Scattered showers, mainly before noon. Mostly sunny, with a high near 89. East wind 14 to 16 mph. Chance of precipitation is 40%.

    Scattered
    Showers then
    Mostly Sunny

    High: 89 °F

  • Monday
    Night

    Monday Night: Scattered showers. Partly cloudy, with a low around 78. East wind 8 to 10 mph. Chance of precipitation is 40%.

    Scattered
    Showers

    Low: 78 °F

Detailed Forecast

Tonight
Scattered showers, mainly before midnight. Partly cloudy, with a low around 79. East wind 8 to 10 mph. Chance of precipitation is 40%.
Friday
Scattered showers, with thunderstorms also possible after noon. Partly sunny, with a high near 90. East northeast wind 11 to 17 mph. Chance of precipitation is 40%.
Friday Night
Scattered showers. Partly cloudy, with a low around 79. East wind 9 to 11 mph. Chance of precipitation is 40%.
Saturday
Isolated showers. Sunny, with a high near 92. East wind 14 to 17 mph. Chance of precipitation is 20%.
Saturday Night
Isolated showers. Mostly clear, with a low around 77. East wind 8 to 11 mph. Chance of precipitation is 10%.
Sunday
Isolated showers, then scattered showers and thunderstorms after noon. Mostly sunny, with a high near 88. East wind 14 to 17 mph. Chance of precipitation is 40%.
Sunday Night
Scattered showers. Partly cloudy, with a low around 79. East wind around 13 mph. Chance of precipitation is 40%.
Monday
Scattered showers, mainly before noon. Mostly sunny, with a high near 89. East wind 14 to 16 mph. Chance of precipitation is 40%.
Monday Night
Scattered showers. Partly cloudy, with a low around 78. East wind 8 to 10 mph. Chance of precipitation is 40%.
Tuesday
Scattered showers. Mostly sunny, with a high near 89. Chance of precipitation is 40%.
Tuesday Night
Partly cloudy, with a low around 78.
Wednesday
Mostly sunny, with a high near 91.
Wednesday Night
Mostly clear, with a low around 79.
Thursday
Sunny, with a high near 90.
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
San Juan PRSimilar City Names
 18.41°N 66.07°W (Elev. 56 ft)
Last Update:
8:15 pm AST Aug 16, 2018
Forecast Valid:
11pm AST Aug 16, 2018-6pm AST Aug 23, 2018
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation