National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Areas of Dangerous Heat and Heavy Rain with Possible Flooding into this Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend with heat advisories in effect. Heavy to excessive rainfall occurring at times through Sunday could bring areas of flooding to parts of the upper Midwest, central Great Lakes, southern New England and Virginia/North Carolina tidewater region. Read More >

Current conditions at

Cotulla, Cotulla-La Salle County Airport (KCOT)

Lat: 28.46°NLon: 99.22°WElev: 476ft.

Fair

89°F

32°C

Humidity 57%
Wind Speed E 16 mph
Barometer 30.10 in (1018.5 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index96°F (36°C)
Last update 17 Sep 9:53 pm CDT
Extended Forecast for

Cotulla TX

  • Tonight

    Tonight: Mostly cloudy, with a low around 77. East wind 5 to 10 mph, with gusts as high as 18 mph.

    Low: 77 °F

    Mostly Cloudy

  • Friday

    Friday: A 30 percent chance of showers, mainly before 11am. Mostly sunny and hot, with a high near 99. Heat index values as high as 105. East wind 6 to 8 mph.

    High: 99 °F

    Chance
    Showers then
    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 74. East southeast wind 5 to 10 mph becoming light southeast after midnight. Winds could gust as high as 18 mph.

    Low: 74 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 99. Heat index values as high as 102. Calm wind becoming east southeast around 6 mph in the morning.

    High: 99 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 75. Southeast wind 6 to 11 mph, with gusts as high as 21 mph.

    Low: 75 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny and hot, with a high near 100. East southeast wind 3 to 5 mph.

    High: 100 °F

    Hot

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 76. Southeast wind 7 to 10 mph, with gusts as high as 21 mph.

    Low: 76 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny and hot, with a high near 99. East southeast wind 5 to 7 mph.

    High: 99 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 76. Southeast wind 6 to 10 mph, with gusts as high as 20 mph.

    Low: 76 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 77. East wind 5 to 10 mph, with gusts as high as 18 mph.
Friday
A 30 percent chance of showers, mainly before 11am. Mostly sunny and hot, with a high near 99. Heat index values as high as 105. East wind 6 to 8 mph.
Friday Night
Mostly clear, with a low around 74. East southeast wind 5 to 10 mph becoming light southeast after midnight. Winds could gust as high as 18 mph.
Saturday
Sunny and hot, with a high near 99. Heat index values as high as 102. Calm wind becoming east southeast around 6 mph in the morning.
Saturday Night
Mostly clear, with a low around 75. Southeast wind 6 to 11 mph, with gusts as high as 21 mph.
Sunday
Mostly sunny and hot, with a high near 100. East southeast wind 3 to 5 mph.
Sunday Night
Partly cloudy, with a low around 76. Southeast wind 7 to 10 mph, with gusts as high as 21 mph.
Monday
Mostly sunny and hot, with a high near 99. East southeast wind 5 to 7 mph.
Monday Night
Mostly clear, with a low around 76. Southeast wind 6 to 10 mph, with gusts as high as 20 mph.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 99.
Tuesday Night
A 20 percent chance of showers. Mostly clear, with a low around 76.
Wednesday
Mostly sunny and hot, with a high near 99.
Wednesday Night
Partly cloudy, with a low around 76.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 99.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Cotulla TX
 28.44°N 99.25°W
Last Update:
1:46 pm CDT Sep 17, 2026
Forecast Valid:
10pm CDT Sep 17, 2026-6pm CDT Sep 24, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation