Brownsville/Rio Grande Valley, TX

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Last Map Update: Thu, Jun 18, 2026 at 2:48:18 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 Watch

Extreme Heat Warning

Heat Safety

Isolated Flash Flooding Saturday

Today

Tonight

Tomorrow

5-Day Outlook

An Extreme Heat Warning is in effect for all of Deep South Texas except the barrier island from 11 AM to 8 PM CDT today. "Feels-like" temperatures will surge to 116-125F degrees for many this afternoon. 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.

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

Here are the forecast low temperatures and rain chances for Deep South Texas tonight.

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

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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