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

Extreme Heat and Excessive Rainfall This Week

A significant heat wave continues for the Rockies, Northern Plains, and Great Lakes into the Mid-Atlantic, peaking in intensity through midweek and lingering across parts of the Northern Plains and Midwest until this weekend. Excessive rainfall my bring life-threatening and locally catastrophic flash and urban flooding across portions of southwestern Texas through early Friday. Read More >

Current conditions at

Corpus Christi, Corpus Christi Naval Air Station/Truax Field (KNGP)

Lat: 27.69°NLon: 97.29°WElev: 20ft.

A Few Clouds

84°F

29°C

Humidity 82%
Wind Speed SE 18 G 24 mph
Barometer 29.99 in (1015.5 mb)
Dewpoint 78°F (26°C)
Visibility 9.00 mi
Heat Index95°F (35°C)
Last update 15 Jul 2:56 am CDT
Extended Forecast for

Portland TX

  • Overnight

    Overnight: A 10 percent chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 82. Southeast wind 11 to 13 mph.

    Low: 82 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms, mainly before 10am. Mostly cloudy, with a high near 88. Heat index values as high as 103. South southeast wind 11 to 15 mph, with gusts as high as 20 mph.

    High: 88 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A slight chance of showers, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 82. Southeast wind around 14 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    Low: 82 °F

    Mostly Cloudy
    then Chance
    Showers

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms, mainly between 1pm and 2pm. Partly sunny, with a high near 89. Heat index values as high as 106. South southeast wind 13 to 16 mph, with gusts as high as 23 mph.

    High: 89 °F

    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 83. Southeast wind 14 to 16 mph, with gusts as high as 22 mph.

    Low: 83 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 90. South southeast wind 14 to 16 mph, with gusts as high as 23 mph.

    High: 90 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 82. Southeast wind 11 to 16 mph, with gusts as high as 22 mph.

    Low: 82 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 90. South southeast wind 10 to 16 mph, with gusts as high as 23 mph.

    High: 90 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 82. South southeast wind 13 to 17 mph, with gusts as high as 22 mph.

    Low: 82 °F

    Partly Cloudy

Detailed Forecast

Overnight
A 10 percent chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 82. Southeast wind 11 to 13 mph.
Wednesday
A 30 percent chance of showers and thunderstorms, mainly before 10am. Mostly cloudy, with a high near 88. Heat index values as high as 103. South southeast wind 11 to 15 mph, with gusts as high as 20 mph.
Wednesday Night
A slight chance of showers, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 82. Southeast wind around 14 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Thursday
A 20 percent chance of showers and thunderstorms, mainly between 1pm and 2pm. Partly sunny, with a high near 89. Heat index values as high as 106. South southeast wind 13 to 16 mph, with gusts as high as 23 mph.
Thursday Night
Mostly cloudy, with a low around 83. Southeast wind 14 to 16 mph, with gusts as high as 22 mph.
Friday
Partly sunny, with a high near 90. South southeast wind 14 to 16 mph, with gusts as high as 23 mph.
Friday Night
Mostly cloudy, with a low around 82. Southeast wind 11 to 16 mph, with gusts as high as 22 mph.
Saturday
Partly sunny, with a high near 90. South southeast wind 10 to 16 mph, with gusts as high as 23 mph.
Saturday Night
Partly cloudy, with a low around 82. South southeast wind 13 to 17 mph, with gusts as high as 22 mph.
Sunday
Mostly sunny, with a high near 89.
Sunday Night
Mostly clear, with a low around 81.
Monday
Sunny, with a high near 89.
Monday Night
Mostly clear, with a low around 81.
Tuesday
Mostly sunny, with a high near 89.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Portland TX
 27.88°N 97.32°W
Last Update:
1:40 am CDT Jul 15, 2026
Forecast Valid:
3am CDT Jul 15, 2026-6pm CDT Jul 21, 2026
 
Forecast Discussion
 
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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