Thunderstorms and Heavy Rains Across Portions of the Central and Eastern US; Heat Expands to Portions of the East

Widespread showers and thunderstorms, some severe, may produce heavy downpours and flash flooding across much of the eastern and central U.S. Dangerous heat will continue in the Pacific Northwest and expand across portions of the East. Deep tropical moisture and associated thunderstorms will bring heavy rainfall and localized flash flooding across portions of Florida into the central Gulf Coast. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

San Juan, Luis Munoz Marin International Airport (TJSJ)

Lat: 18.45°NLon: 66°WElev: 10ft.

Mostly Cloudy

81°F

27°C

Humidity	89%
Wind Speed	E 7 mph
Barometer	30.07 in
Dewpoint	77°F (25°C)
Visibility	10.00 mi
Heat Index	88°F (31°C)
Last update	15 Jul 11:56 pm AST

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

San Juan PR

Overnight
Low: 78 °F
Scattered
Showers
Wednesday
High: 90 °F
Showers
Likely
Wednesday Night
Low: 78 °F
Scattered
Showers then
Clear
Thursday
High: 91 °F
Isolated
Showers
Thursday Night
Low: 78 °F
Haze
Friday
High: 90 °F
Isolated
Showers
Friday Night
Low: 77 °F
Partly Cloudy
Saturday
High: 90 °F
Mostly Sunny
Saturday Night
Low: 77 °F
Mostly Clear

Detailed Forecast

Overnight

Scattered showers, mainly after 3am. Partly cloudy, with a low around 78. East wind around 10 mph. Chance of precipitation is 40%.

Wednesday

Showers likely, with thunderstorms also possible after noon. Mostly cloudy, with a high near 90. Heat index values as high as 104. East wind 11 to 16 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New rainfall amounts between three quarters and one inch possible.

Wednesday Night

Scattered showers before midnight. Partly cloudy, with a low around 78. East wind around 9 mph. Chance of precipitation is 30%.

Thursday

Isolated showers. Widespread haze. Mostly sunny, with a high near 91. Heat index values as high as 105. East wind 11 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

Thursday Night

Widespread haze. Clear, with a low around 78. East wind around 9 mph.

Friday

Isolated showers. Widespread haze. Mostly sunny, with a high near 90. East northeast wind 8 to 15 mph. Chance of precipitation is 20%.

Friday Night

Partly cloudy, with a low around 77. East wind 7 to 9 mph.

Saturday

Mostly sunny, with a high near 90. East wind 7 to 15 mph.

Saturday Night

Mostly clear, with a low around 77. East southeast wind 6 to 9 mph.

Sunday

Mostly sunny, with a high near 91.