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National Weather Service Today's Weather Impact Levels

National Weather Service Forecast for: San Juan, Puerto Rico  

Updated: 3:49 pm AST Apr 17, 2026

Tonight

Tonight: Showers likely, mainly before 9pm. Mostly cloudy, with a low around 73. East southeast wind 8 to 11 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Showers
Likely
Lo 73 °F
Saturday

Saturday: Scattered showers, with thunderstorms also possible after noon. Partly sunny, with a high near 86. East wind 10 to 14 mph. Chance of precipitation is 40%.
Scattered
Showers
Hi 86 °F
Saturday
Night
Saturday Night: Scattered showers, mainly between 9pm and 3am. Partly cloudy, with a low around 73. East wind 7 to 10 mph. Chance of precipitation is 40%.
Scattered
Showers
Lo 73 °F
Sunday

Sunday: Isolated showers. Mostly sunny, with a high near 86. East wind 9 to 14 mph. Chance of precipitation is 20%.
Isolated
Showers
Hi 86 °F
Sunday
Night
Sunday Night: Isolated showers. Mostly clear, with a low around 73. East wind 7 to 9 mph. Chance of precipitation is 10%.
Isolated
Showers
Lo 73 °F
Monday

Monday: Scattered showers, mainly after noon. Mostly sunny, with a high near 86. East wind 9 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
Scattered
Showers
Hi 86 °F
Monday
Night
Monday Night: Partly cloudy, with a low around 73. East southeast wind around 9 mph.
Partly Cloudy
Lo 73 °F
Tuesday

Tuesday: Scattered showers. Partly sunny, with a high near 87. East wind 8 to 11 mph. Chance of precipitation is 40%.
Scattered
Showers
Hi 87 °F
Tuesday
Night
Tuesday Night: Partly cloudy, with a low around 73. East wind around 7 mph.
Partly Cloudy
Lo 73 °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)

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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