Brownsville/Rio Grande Valley, TX

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Last Map Update: Thu, Jun 18, 2026 at 9:24:15 pm CDT

Watches, Warnings & Advisories

National Weather Service Corpus Christi, TX

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Flood Warning

Extreme Heat Warning

Heat Advisory

Small Craft Advisory

Extreme Heat Warning

Heat Safety

Isolated Flash Flooding Saturday

Small Craft Advisory

Today

5-Day Outlook

The Extreme Heat Watch has been upgraded to an Extreme Heat Warning for all of Deep South Texas except the barrier island from Noon to 7 PM CDT Friday. "Feels-like" temperatures will surge to 112-121F degrees for many during the day on Friday. Little to no relief is expected tonight through Friday night. Make sure to check on the elderly, vulnerable populations, livestock, and pets to ensure they have access to cool locations and water.

With the hottest "feels-like" temperatures in several years now here in Deep South Texas and the Rio Grande Valley, it's critical to follow these heat-safety tips.

The combination of low pressure in the middle layers of the atmosphere and deep tropical moisture will produce a threat for isolated flash flooding for Saturday through Saturday night.

A Small Craft Advisory is in effect for the Laguna Madre Bay and Gulf waters until 12z tomorrow. Gusty winds up to 30 are expected, along with elevated wave heights up to 8 feet.

Here are the forecast high temperatures and rain chances for Deep South Texas today.

After hot temperatures to end the week, a robust chance of rain will return for early in the weekend due to low pressure in the middle layers of the atmosphere. The heat will return beginning late in the weekend.

*Current Observations ( )*
*Location*	*Sky/Weather*	*Temp*	*Dewpt*	RH	*Wind*	*Baro*	*Remarks*
Brownsville	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Harlingen	N/A	N/A	N/A	N/A	N/A	N/A	N/A
McAllen	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Bayview	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Weslaco	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Edinburg	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Zapata	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Hebbronville	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Falfurrias	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Laredo	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Kingsville	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Alice	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Notes: *In the Location column, click on links for a list of recent observations at sites of interest. A new window will open.* *In the Wind column, the letter indicates direction the wind blows from (N=North, E=East, S=South, W=West, NE=Northeast, etc). VRB is "variable" and G is "gust". Wind speeds are in MPH.* *In the Baro (pressure) column, values are in inches.* *In the Remarks column, HX is the Heat Index and WCI is Wind Chill Index (if shown). These are "Feels Like" temperatures. VSB is Visibility. "N/A" will be displayed if values are not available.*

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