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National Weather Service Today's Weather Impact Levels

National Weather Service Forecast for: San Juan, Puerto Rico  

Updated: 8:57 pm AST Mar 19, 2026

Overnight

Overnight: Isolated showers. Partly cloudy, with a low around 72. South southeast wind around 7 mph. Chance of precipitation is 20%.
Isolated
Showers

Lo 72 °F
Friday

Friday: Scattered showers, mainly after 9am. Mostly sunny, with a high near 88. Southeast wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 40%.
Scattered
Showers

Hi 88 °F
Friday
Night
Friday Night: Isolated showers. Partly cloudy, with a low around 74. South southeast wind around 6 mph. Chance of precipitation is 20%.
Isolated
Showers

Lo 74 °F
Saturday

Saturday: Isolated showers, then showers likely and possibly a thunderstorm after noon. Increasing clouds, with a high near 88. South southeast wind 7 to 11 mph. Chance of precipitation is 70%.
Isolated
Showers then
Showers
Likely
Hi 88 °F
Saturday
Night
Saturday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 73. Light south wind. Chance of precipitation is 60%.
Showers
Likely

Lo 73 °F
Sunday

Sunday: Isolated showers, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 85. Light and variable wind becoming north 5 to 10 mph in the morning. Chance of precipitation is 60%.
Isolated
Showers then
Showers
Likely
Hi 85 °F
Sunday
Night
Sunday Night: Scattered showers. Mostly cloudy, with a low around 73. Calm wind. Chance of precipitation is 40%.
Scattered
Showers

Lo 73 °F
Monday

Monday: Showers likely. Mostly cloudy, with a high near 83. Calm wind becoming north northeast 5 to 9 mph in the afternoon. Chance of precipitation is 60%.
Showers
Likely

Hi 83 °F
Monday
Night
Monday Night: Showers likely. Mostly cloudy, with a low around 74. Northeast wind around 6 mph becoming calm in the evening. Chance of precipitation is 60%.
Showers
Likely

Lo 74 °F

National Weather Service Forecast Details

 

Caribbean Sea Satellite

NWS San Juan Doppler Radar

GRLevel3 Radar

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GRLevel3 radar from NWS station TJUA

Day 1 rainfall

Day 2 rainfall

Day 3 rainfall

National Weather Service in San Juan

Area Forecast Discussion (AFD)

Weather Summary unavailable, please try later.

NWS SJU Office Area Forecast Discussion

Tropical Atlantic Satellite

Tropical Weather Outlook

Saharan Air Layer

Wind Shear Tendency

Sea Surface Temperatures

Sea Surface Temperatures Anomalies

200hPa Velocity Potential Forecast