News Headlines
- Rapid-Onset (Flash) Drought Continues to Worsen Across the RGV/Deep S. Texas Ranchlands. Click Here for Details.
- RGV Summer (June-August) Weather and Climate Summary - Early Rain Gives Way to Brutal El Nino-Driven Heat, Drought
- New: September-November 2026 Outlook - Warmer Than Normal Conditions Favored; Precipitation A Toss-Up, But Could Trend Wetter Later This Fall; Heat Risk, Drought, Fire Weather, And Water Supply Issues Remain In Focus
- The 2026 Atlantic Hurricane Season is Fading...but is not Over Yet. Are You Ready? Know Your Risk, Check Your Plans, Restock Your Kits, and More
Current conditions at
Port Isabel, Port Isabel-Cameron County Airport (KPIL)
Lat: 26.16°NLon: 97.34°WElev: 16ft.
Fair
79°F
26°C
| Humidity | 88% |
| Wind Speed | Calm |
| Barometer | 29.95 in (1014.1 mb) |
| Dewpoint | 75°F (24°C) |
| Visibility | 10.00 mi |
| Heat Index | 83°F (28°C) |
| Last update | 19 Sep 5:53 am CDT |
Extended Forecast for
10 Miles E Port Mansfield TX
Today

High: 95 °F
Sunny
Tonight

Low: 82 °F
Mostly Clear
Sunday

High: 95 °F
Sunny
Sunday Night

Low: 82 °F
Partly Cloudy
Monday

High: 95 °F
Slight Chance
T-stormsMonday Night

Low: 82 °F
Mostly Clear
Tuesday

High: 95 °F
Chance
ShowersTuesday Night
Low: 83 °F
Mostly Clear
then Slight
Chance
T-stormsWednesday
High: 92 °F
Chance
Showers then
Chance
T-storms
Detailed Forecast
Today
Sunny, with a high near 95. Heat index values as high as 109. Light and variable wind becoming east 8 to 13 mph in the afternoon.
Tonight
Mostly clear, with a low around 82. East wind 5 to 11 mph becoming south after midnight.
Sunday
Sunny, with a high near 95. Heat index values as high as 110. Light and variable wind becoming east 6 to 11 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 82. East wind 6 to 11 mph.
Monday
A slight chance of showers before 10am, then a slight chance of showers and thunderstorms between 10am and 1pm. Sunny, with a high near 95. Light and variable wind becoming east 6 to 11 mph in the afternoon. Chance of precipitation is 20%.
Monday Night
Mostly clear, with a low around 82. Southeast wind 5 to 11 mph.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly before 1pm. Sunny, with a high near 95. Light east southeast wind becoming east 9 to 14 mph in the morning.
Tuesday Night
A 20 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 83. East southeast wind 5 to 14 mph.
Wednesday
A 40 percent chance of showers and thunderstorms. Sunny, with a high near 92. East northeast wind 5 to 15 mph, with gusts as high as 20 mph.
Wednesday Night
A 30 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 84. East wind 8 to 14 mph.
Thursday
A 50 percent chance of showers and thunderstorms. Sunny, with a high near 92. East northeast wind 8 to 16 mph, with gusts as high as 21 mph.
Thursday Night
A 30 percent chance of showers and thunderstorms. Mostly clear, with a low around 83.
Friday
A 40 percent chance of showers and thunderstorms. Sunny, with a high near 91.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
ABOUT THIS FORECAST
Point Forecast:
10 Miles E Port Mansfield TX
26.56°N 97.27°W
26.56°N 97.27°W
6:00 am CDT Sep 19, 2026
6am CDT Sep 19, 2026-6pm CDT Sep 25, 2026


