National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
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Current conditions at

San Juan, Luis Munoz Marin International Airport (TJSJ)

Lat: 18.45°NLon: 66°WElev: 10ft.

Partly Cloudy

87°F

31°C

Humidity 67%
Wind Speed E 7 mph
Barometer 30.03 in (1016.9 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index96°F (36°C)
Last update 29 Jun 10:56 am AST
Extended Forecast for

Palmer PR

  • Today

    Today: Scattered showers and thunderstorms, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 90. Heat index values as high as 102. East southeast wind around 15 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 90 °F

    Showers
    Likely

  • Tonight

    Tonight: Isolated showers. Widespread haze. Partly cloudy, with a low around 76. East southeast wind 8 to 11 mph. Chance of precipitation is 20%.

    Low: 76 °F

    Isolated
    Showers

  • Tuesday

    Tuesday: Isolated showers after 9am. Widespread haze. Sunny, with a high near 90. East southeast wind around 16 mph, with gusts as high as 21 mph. Chance of precipitation is 10%.

    High: 90 °F

    Isolated
    Showers

  • Tuesday Night

    Tuesday Night: Scattered showers, mainly after midnight. Widespread haze before midnight. Partly cloudy, with a low around 76. East wind around 10 mph. Chance of precipitation is 30%.

    Low: 76 °F

    Scattered
    Showers

  • Wednesday

    Wednesday: Scattered showers, mainly before noon. Widespread haze after noon. Mostly sunny, with a high near 90. East wind 13 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    High: 90 °F

    Scattered
    Showers

  • Wednesday Night

    Wednesday Night: Isolated showers. Widespread haze. Partly cloudy, with a low around 76. East wind around 10 mph. Chance of precipitation is 10%.

    Low: 76 °F

    Isolated
    Showers

  • Thursday

    Thursday: Scattered showers, mainly before noon. Mostly sunny, with a high near 90. East wind 13 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.

    High: 90 °F

    Scattered
    Showers then
    Sunny

  • Thursday Night

    Thursday Night: Scattered showers. Partly cloudy, with a low around 76. East wind around 11 mph. Chance of precipitation is 30%.

    Low: 76 °F

    Scattered
    Showers

  • Friday

    Friday: Sunny, with a high near 90. East wind around 14 mph.

    High: 90 °F

    Sunny

Detailed Forecast

Today
Scattered showers and thunderstorms, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 90. Heat index values as high as 102. East southeast wind around 15 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
Tonight
Isolated showers. Widespread haze. Partly cloudy, with a low around 76. East southeast wind 8 to 11 mph. Chance of precipitation is 20%.
Tuesday
Isolated showers after 9am. Widespread haze. Sunny, with a high near 90. East southeast wind around 16 mph, with gusts as high as 21 mph. Chance of precipitation is 10%.
Tuesday Night
Scattered showers, mainly after midnight. Widespread haze before midnight. Partly cloudy, with a low around 76. East wind around 10 mph. Chance of precipitation is 30%.
Wednesday
Scattered showers, mainly before noon. Widespread haze after noon. Mostly sunny, with a high near 90. East wind 13 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Wednesday Night
Isolated showers. Widespread haze. Partly cloudy, with a low around 76. East wind around 10 mph. Chance of precipitation is 10%.
Thursday
Scattered showers, mainly before noon. Mostly sunny, with a high near 90. East wind 13 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.
Thursday Night
Scattered showers. Partly cloudy, with a low around 76. East wind around 11 mph. Chance of precipitation is 30%.
Friday
Sunny, with a high near 90. East wind around 14 mph.
Friday Night
Mostly clear, with a low around 76.
Independence Day
Scattered showers. Mostly sunny, with a high near 90. Chance of precipitation is 30%.
Saturday Night
Mostly clear, with a low around 77.
Sunday
Sunny, with a high near 90.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Palmer PR
 18.37°N 65.77°W (Elev. 49 ft)
Last Update:
7:46 am AST Jun 29, 2026
Forecast Valid:
11am AST Jun 29, 2026-6pm AST Jul 5, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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