Tracking Late Season Winter Storms; Unusual Early-Season Heat Wave in the Southwest

Heavy snow and high winds continue in the Great Lakes and Northeast. A moderate atmospheric river will continue to bring heavy precipitation to the Pacific Northwest and northern Rockies. A major winter storm will develop across the northern High Plains tonight into Saturday and rapidly strengthen as it moves into the Great Lakes on Sunday. Above-average temperatures expected in the Southwest. Read More >

Current conditions at

San Juan, Luis Munoz Marin International Airport (TJSJ)

Lat: 18.45° N Lon: 66° W Elev: 10 ft.

Partly Cloudy

82°F

28°C

Humidity 62%
Wind Speed E 17 mph
Barometer 30.05 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 13 Mar 11:56 am AST
Detailed forecast for

San Juan and Vicinity

Today
Variably cloudy with scattered showers this morning, then partly cloudy with isolated showers this afternoon. Highs around 85. East winds 10 to 15 mph. Chance of rain 50 percent.
Tonight
Partly cloudy in the evening, then becoming mostly clear. Isolated showers. Lows around 79. East winds 5 to 10 mph. Chance of rain 20 percent.
Saturday
Partly cloudy with isolated showers. Highs around 86. East winds 15 to 20 mph. Chance of rain 20 percent.
Saturday Night
Partly cloudy with isolated showers. Lows around 79. East winds 10 to 15 mph. Chance of rain 20 percent.
Sunday
Partly cloudy with isolated showers in the morning, then variably cloudy with scattered showers in the afternoon. Highs around 87. East winds 15 to 20 mph. Chance of rain 50 percent.
Sunday Night
Partly cloudy in the evening, then becoming clear. Isolated showers. Lows around 79. Chance of rain 20 percent.
Monday
Breezy. Variably cloudy with scattered showers. Highs around 86. Chance of rain 40 percent.
Monday Night
Partly cloudy with isolated showers. Lows around 79. Chance of rain 20 percent.
Tuesday
Breezy. Variably cloudy with scattered showers. Highs around 87. Chance of rain 50 percent.
Tuesday Night
Variably cloudy with scattered showers. Lows around 79. Chance of rain 40 percent.
Wednesday
Partly cloudy with isolated showers. Highs around 86. Chance of rain 20 percent.
Wednesday Night
Partly cloudy with isolated showers. Lows around 79. Chance of rain 20 percent.
Thursday
Partly cloudy with isolated showers. Highs around 88. Chance of rain less than 20 percent.



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243 AM AST Fri Mar 13 2026
 
 

Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database