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
Harlingen, Rio Grande Valley International Airport (KHRL)
Lat: 26.23°NLon: 97.66°WElev: 33ft.
A Few Clouds
77°F
25°C
| Humidity | 90% |
| Wind Speed | NW 3 mph |
| Barometer | 29.96 in (1014.4 mb) |
| Dewpoint | 74°F (23°C) |
| Visibility | 10.00 mi |
| Heat Index | 78°F (26°C) |
| Last update | 19 Sep 2:52 am CDT |
Extended Forecast for
Port Mansfield TX
Overnight

Low: 81 °F
Mostly Clear
Saturday

High: 88 °F
Sunny
Saturday Night

Low: 80 °F
Mostly Clear
Sunday

High: 89 °F
Sunny
Sunday Night

Low: 81 °F
Partly Cloudy
Monday

High: 89 °F
Slight Chance
T-stormsMonday Night

Low: 81 °F
Clear
Tuesday

High: 88 °F
Chance
T-stormsTuesday Night
Low: 81 °F
Mostly Clear
then Slight
Chance
T-storms
Detailed Forecast
Overnight
Mostly clear, with a low around 81. East southeast wind 3 to 5 mph.
Saturday
Sunny, with a high near 88. Light and variable wind becoming east 8 to 13 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 80. East wind 5 to 13 mph becoming south after midnight.
Sunday
Sunny, with a high near 89. Light and variable wind becoming east 6 to 11 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 81. East wind 6 to 13 mph.
Monday
A slight chance of showers before 10am, then a slight chance of showers and thunderstorms between 10am and 4pm, then a slight chance of showers after 4pm. Sunny, with a high near 89. Light and variable wind becoming east 6 to 11 mph in the afternoon. Chance of precipitation is 20%.
Monday Night
Clear, with a low around 81. Southeast wind 5 to 13 mph.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Sunny, with a high near 88. Light east southeast wind becoming east 9 to 14 mph in the morning. Winds could gust as high as 20 mph.
Tuesday Night
A 20 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 81. East wind 5 to 13 mph, with gusts as high as 20 mph.
Wednesday
A 40 percent chance of showers and thunderstorms. Sunny, with a high near 90. Light east northeast wind becoming east 10 to 15 mph in the morning. Winds could gust as high as 21 mph.
Wednesday Night
A 20 percent chance of showers. Mostly clear, with a low around 81. East wind 7 to 14 mph, with gusts as high as 20 mph.
Thursday
A 50 percent chance of showers and thunderstorms. Sunny, with a high near 90.
Thursday Night
A 30 percent chance of showers. Mostly clear, with a low around 80.
Friday
A 40 percent chance of showers and thunderstorms. Sunny, with a high near 89.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
ABOUT THIS FORECAST
Point Forecast:
Port Mansfield TX
26.56°N 97.43°W
26.56°N 97.43°W
2:47 am CDT Sep 19, 2026
3am CDT Sep 19, 2026-6pm CDT Sep 25, 2026


