National Weather Service United States Department of Commerce

Heavy rain forecast for parts of the Southwest

The combination of a slow-moving front and monsoon moisture will bring thunderstorms to parts of the Southwest, some with heavy rain that could lead to isolated flash flooding. Areas at risk include southern Arizona, New Mexico and western Texas.
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Hazardous Weather Conditions

Current Conditions

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San Juan PR

7 Day Forecast

For More Weather Information:

San Juan, PR Local Forecast Office

Overnight

Isolated Showers Chance for Measurable Precipitation 20%

Isolated
Showers

Low: 25 °C

Friday

Isolated Showers Chance for Measurable Precipitation 10%

Isolated
Showers

High: 33 °C

Friday
Night

Isolated Showers Chance for Measurable Precipitation 10%

Isolated
Showers

Low: 26 °C

Saturday

Showers Likely Chance for Measurable Precipitation 70%

Showers
Likely

High: 30 °C

Saturday
Night

Showers Likely Chance for Measurable Precipitation 70%

Showers
Likely

Low: 26 °C

Sunday

Scattered Showers Chance for Measurable Precipitation 30%

Scattered
Showers

High: 33 °C

Sunday
Night

Isolated Showers Chance for Measurable Precipitation 20%

Isolated
Showers

Low: 26 °C

Monday

Isolated Showers Chance for Measurable Precipitation 20%

Isolated
Showers

High: 33 °C

Monday
Night

Isolated Showers Chance for Measurable Precipitation 20%

Isolated
Showers

Low: 26 °C

Detailed Forecast

  • Overnight Isolated showers. Mostly clear, with a low around 25. East southeast wind around 10 km/h. Chance of precipitation is 20%.
  • Friday Isolated showers before 2pm. Sunny, with a high near 33. Heat index values as high as 39. East wind 18 to 23 km/h. Chance of precipitation is 10%.
  • Friday Night Isolated showers after 8pm. Mostly clear, with a low around 26. East wind 14 to 16 km/h. Chance of precipitation is 10%.
  • Saturday Showers likely and possibly a thunderstorm. Sunny through mid morning, then becoming cloudy, with a high near 30. Heat index values as high as 36. East northeast wind 23 to 32 km/h. Chance of precipitation is 70%. New rainfall amounts between 1 and 2.5 mm, except higher amounts possible in thunderstorms.
  • Saturday Night Showers likely and possibly a thunderstorm before 2am, then scattered showers and thunderstorms after 2am. Cloudy, with a low around 26. East southeast wind 16 to 26 km/h. Chance of precipitation is 70%. New rainfall amounts between 1 and 2 cm possible.
  • Sunday Scattered showers and thunderstorms. Mostly cloudy, with a high near 33. East southeast wind 21 to 23 km/h. Chance of precipitation is 30%. New rainfall amounts between 2.5 and 5 mm possible.
  • Sunday Night Isolated showers. Partly cloudy, with a low around 26. East wind around 18 km/h. Chance of precipitation is 20%.
  • Monday Isolated showers. Mostly sunny, with a high near 33. East wind 18 to 23 km/h. Chance of precipitation is 20%.
  • Monday Night Isolated showers. Mostly clear, with a low around 26. East wind 18 to 21 km/h. Chance of precipitation is 20%.
  • Tuesday Isolated showers. Mostly sunny, with a high near 33. Chance of precipitation is 20%.
  • Tuesday Night Isolated showers. Mostly clear, with a low around 26. Chance of precipitation is 10%.
  • Wednesday Isolated showers. Sunny, with a high near 33. Chance of precipitation is 20%.
  • Wednesday Night Isolated showers. Partly cloudy, with a low around 26. Chance of precipitation is 20%.
  • Thursday Isolated showers. Mostly sunny, with a high near 33. Chance of precipitation is 20%.