Hot in Parts of the West; Cold Blast Coming to the Central U.S.

Hot to extremely hot temperatures are in place much of this week across parts of California and the interior Northwest U.S. A blast of cold air will drop across the central and eastern U.S. later this week bringing below to well below normal temperatures. Read More >

Hazardous Weather Conditions

Current conditions at

San Juan, Luis Munoz Marin International Airport (TJSJ)

Lat: 18.45°NLon: 66°WElev: 10ft.

Partly Cloudy

78°F

26°C

Humidity	87%
Wind Speed	Calm
Barometer	29.97 in (1014.8 mb)
Dewpoint	74°F (23°C)
Visibility	10.00 mi
Heat Index	80°F (27°C)
Last update	1 Sep 5:56 am AST

More Information:

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

Extended Forecast for

San Juan PRSimilar City Names

Heat Advisory September 1, 10:00am until September 1, 05:00pm

Click here for hazard details and duration

Heat Advisory

Labor Day
High: 91 °F
Scattered
Showers then
Showers
Likely
Tonight
Low: 79 °F
Scattered
Showers
Tuesday
High: 90 °F
Scattered
Showers
Tuesday Night
Low: 79 °F
Isolated
Showers then
Clear
Wednesday
High: 90 °F
Isolated
Showers then
Scattered
Showers
Wednesday Night
Low: 78 °F
Isolated
Showers
Thursday
High: 90 °F
Mostly Sunny
Thursday Night
Low: 78 °F
Mostly Clear
Friday
High: 89 °F
Mostly Sunny
then Showers
Likely

Detailed Forecast

Labor Day

Scattered showers before noon, then showers likely and possibly a thunderstorm between noon and 3pm, then isolated showers after 3pm. Partly sunny, with a high near 91. Heat index values as high as 103. East southeast wind 5 to 14 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

Tonight

Scattered showers, mainly after 9pm. Mostly cloudy, with a low around 79. East southeast wind 6 to 8 mph. Chance of precipitation is 40%.

Tuesday

Scattered showers, with thunderstorms also possible after noon. Mostly sunny, with a high near 90. Heat index values as high as 103. East southeast wind 8 to 15 mph. Chance of precipitation is 40%.

Tuesday Night

Isolated showers before midnight. Mostly clear, with a low around 79. East southeast wind 6 to 8 mph. Chance of precipitation is 10%.

Wednesday

Isolated showers, then scattered showers and thunderstorms after noon. Partly sunny, with a high near 90. East wind 8 to 16 mph. Chance of precipitation is 50%.

Wednesday Night

Isolated showers. Partly cloudy, with a low around 78. East southeast wind 6 to 8 mph. Chance of precipitation is 20%.

Thursday

Mostly sunny, with a high near 90. East wind 7 to 17 mph.

Thursday Night

Mostly clear, with a low around 78. East southeast wind 5 to 8 mph.

Friday

Showers likely, mainly after noon. Partly sunny, with a high near 89. East southeast wind 8 to 10 mph. Chance of precipitation is 60%.

Friday Night

Scattered showers. Partly cloudy, with a low around 78. Chance of precipitation is 40%.

Saturday

Showers likely. Partly sunny, with a high near 89. Chance of precipitation is 70%.