Heavy Great Lakes Snow through Friday; Extreme Cold and Potential for Major Winter Storm Late Week into this Weekend

Multiple clipper systems will bring cold temperatures and enhance lake-effect snow downwind of the Great Lakes. An arctic blast will bring frigid temperatures accompanied with gusty winds that may lead to dangerous wind chills beginning in the Northern Plains Thursday before expanding to the South and East. An expansive winter storm will start Friday in the Southern Rockies/Plains and Mid-South. Read More >

Current conditions at

San Juan, Luis Munoz Marin International Airport (TJSJ)

Lat: 18.45°NLon: 66°WElev: 10ft.

Partly Cloudy

83°F

28°C

Humidity	67%
Wind Speed	E 15 mph
Barometer	29.99 in (1015.5 mb)
Dewpoint	71°F (22°C)
Visibility	10.00 mi
Heat Index	88°F (31°C)
Last update	21 Jan 2:56 pm AST

More Information:

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

Extended Forecast for

3 Miles NE Comerio PR

This Afternoon
High: 78 °F
Isolated
Showers
Tonight
Low: 68 °F
Isolated
Showers then
Scattered
Showers
Thursday
High: 78 °F
Isolated
Showers then
Showers
Likely
Thursday Night
Low: 69 °F
Scattered
Showers
Friday
High: 78 °F
Scattered
Showers
Friday Night
Low: 68 °F
Scattered
Showers
Saturday
High: 77 °F
Scattered
Showers then
Mostly Sunny
Saturday Night
Low: 69 °F
Mostly Clear
Sunday
High: 78 °F
Sunny

Detailed Forecast

This Afternoon

Isolated showers. Mostly sunny, with a high near 78. East northeast wind around 14 mph. Chance of precipitation is 20%.

Tonight

Scattered showers, mainly after midnight. Partly cloudy, with a low around 68. Light east northeast wind. Chance of precipitation is 50%.

Thursday

Isolated showers, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 78. Light east northeast wind becoming east 6 to 11 mph in the morning. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Thursday Night

Scattered showers. Partly cloudy, with a low around 69. Calm wind. Chance of precipitation is 40%.

Friday

Scattered showers, mainly after noon. Mostly sunny, with a high near 78. Light east wind increasing to 5 to 10 mph in the morning. Chance of precipitation is 30%.

Friday Night

Scattered showers, mainly after midnight. Partly cloudy, with a low around 68. Light east wind. Chance of precipitation is 30%.

Saturday

Scattered showers, mainly before noon. Mostly sunny, with a high near 77. Light east wind increasing to 5 to 10 mph in the morning. Chance of precipitation is 30%.

Saturday Night

Mostly clear, with a low around 69. East wind 3 to 5 mph.

Sunday

Sunny, with a high near 78. East wind 6 to 10 mph.

Sunday Night

Mostly clear, with a low around 68.

Monday

Mostly sunny, with a high near 77.

Monday Night

Partly cloudy, with a low around 69.

Tuesday

Sunny, with a high near 78.