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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Current Conditions

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Port Isabel TX

7 Day Forecast

For More Weather Information:

Brownsville, TX Local Forecast Office

Overnight

Partly Cloudy

Partly
Cloudy

Low: 80 °F

Friday

Mostly Sunny

Mostly
Sunny

High: 91 °F

Friday
Night

Mostly Cloudy

Mostly
Cloudy

Low: 80 °F

Saturday

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

High: 90 °F

Saturday
Night

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

Low: 79 °F

Sunday

Chance Thunderstorms Chance for Measurable Precipitation 30%

Chance
Thunderstorms

High: 90 °F

Sunday
Night

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

Low: 79 °F

Monday

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

High: 89 °F

Monday
Night

Partly Cloudy

Partly
Cloudy

Low: 78 °F

Detailed Forecast

  • Overnight Partly cloudy, with a low around 80. South wind 9 to 14 mph.
  • Friday Mostly sunny, with a high near 91. Heat index values as high as 106. Southeast wind 8 to 16 mph, with gusts as high as 21 mph.
  • Friday Night Mostly cloudy, with a low around 80. Southeast wind 6 to 16 mph, with gusts as high as 21 mph.
  • Saturday A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 90. South wind 6 to 11 mph becoming east in the afternoon.
  • Saturday Night A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 79. East wind 5 to 13 mph becoming south after midnight.
  • Sunday A 30 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 90. West southwest wind 5 to 11 mph becoming east northeast in the afternoon.
  • Sunday Night A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 79.
  • Monday A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.
  • Monday Night Partly cloudy, with a low around 78.
  • Tuesday A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.
  • Tuesday Night Partly cloudy, with a low around 79.
  • Wednesday Mostly sunny, with a high near 89.
  • Wednesday Night Partly cloudy, with a low around 80.
  • Thursday Mostly sunny, with a high near 90. Breezy.