National Weather Service United States Department of Commerce

Brownsville/Rio Grande Valley, TX

Weather Forecast Office

NWS Brownsville/Rio Grande Valley

Weather.gov > Brownsville/Rio Grande Valley, TX
Click a location below for detailed forecast.

Last Map Update: Tue, Jun 16, 2026 at 5:42:25 am CDT

Flood Watch
Flash Flooding Possible Today
Tropical Weather Outlook
Monday Rainfall Totals
Tonight
Tomorrow
5-Day Outlook
A Flood Watch is now in effect for all of Deep South Texas into Wednesday morning. Yesterday, 2 to 6 inches of rain fell. Today, up to 2 more inches are forecast to fall with isolated amounts of 4 inches or more where heavier showers or thunderstorms persist.
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Slow moving, heavy rainfall is possible today. This will lead to increased risk for flash flooding across deep south Texas. Many areas have already received rain, and 0.5 to 2 more inches are possible today, with localized amounts of 2 to 4 inches possible. Today, coastal portions of deep south Texas are within a Slight Risk (level 2 of 4) of excessive rain leading to flash flooding, with the remaining inland portions of the area in a Marginal Risk (level 1 of 4) of excessive rainfall leading to flash flooding.
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An inland trough of low pressure is situated near the Texas/Mexico border, and is expected to re-emerge over the Gulf later today. Conditions are marginally conducive for tropical development late today or Wednesday, with a 60% chance in the next 48 hours to 7 days. Heavy rainfall and rip currents remain the main concern along the lower Texas coast. 🟠 Formation chance through 48 hours...medium...60 percent. 🟠 Formation chance through 7 days...medium...60 percent.
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Heavy rain on Monday brought anywhere from a half inch to 6+ inches in just 24 hours. More heavy showers and thunderstorms are possible today, but rain chances will decrease from west to east through the afternoon and evening as the low pressure bringing this abnormal moisture moves offshore. Areas that received heavy rain yesterday may be sensitive to more heavy rainfall today.
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Here are the forecast low temperatures and rain chances for Deep South Texas tonight.
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Here are the forecast high temperatures and rain chances for Deep South Texas tomorrow.
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Drying conditions are anticipated Wednesday into Thursday before rain chances return for the end of the week and into the first half of the weekend.
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Current Observations ( )
Location Sky/Weather Temp Dewpt RH Wind Baro Remarks
Brownsville
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Harlingen
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McAllen
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Bayview
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Weslaco
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Edinburg
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Zapata
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Hebbronville
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Falfurrias
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Laredo
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Kingsville
N/A
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N/A
N/A
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Alice
N/A
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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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