Dangerous Heat and Possible Flooding
Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >
Current conditions at
Port Lavaca - Calhoun County Airport (KPKV)
Lat: 28.65°NLon: 96.68°WElev: 27ft.
Fair
80°F
27°C
| Humidity | 97% |
| Wind Speed | Calm |
| Barometer | 29.96 in |
| Dewpoint | 78°F (26°C) |
| Visibility | 10.00 mi |
| Heat Index | 87°F (31°C) |
| Last update | 28 Aug 2:15 am CDT |
Extended Forecast for
5 Miles S Port Lavaca TX
Overnight
Low: 79 °F
Mostly Cloudy
Friday
High: 94 °F
Slight Chance
T-stormsFriday Night
Low: 78 °F
Mostly Clear
Saturday
High: 93 °F
Sunny
Saturday Night
Low: 78 °F
Clear
Sunday
High: 93 °F
Sunny
Sunday Night
Low: 79 °F
Mostly Clear
Monday
High: 93 °F
Sunny
Monday Night
Low: 79 °F
Mostly Clear
Detailed Forecast
Overnight
Mostly cloudy, with a low around 79. Calm wind.
Friday
A slight chance of showers and thunderstorms before 9am, then a slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 94. Heat index values as high as 107. Calm wind becoming southeast 5 to 9 mph in the afternoon. Chance of precipitation is 20%.
Friday Night
Mostly clear, with a low around 78. South southeast wind 5 to 9 mph becoming calm in the evening.
Saturday
Sunny, with a high near 93. Heat index values as high as 105. Light and variable wind becoming east southeast 5 to 10 mph in the afternoon.
Saturday Night
Clear, with a low around 78. Southeast wind 5 to 9 mph becoming calm in the evening.
Sunday
Sunny, with a high near 93. Light and variable wind becoming southeast 6 to 11 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 79. Southeast wind 5 to 10 mph becoming light south after midnight.
Monday
Sunny, with a high near 93. Light south wind becoming south southeast 8 to 13 mph in the morning.
Monday Night
Mostly clear, with a low around 79. Southeast wind 6 to 11 mph becoming light south after midnight.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 93.
Tuesday Night
Mostly clear, with a low around 79.
Wednesday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 93.
Wednesday Night
Mostly clear, with a low around 78.
Thursday
A 30 percent chance of showers and thunderstorms. Sunny, with a high near 93.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
5 Miles S Port Lavaca TX
28.53°N 96.61°W
28.53°N 96.61°W
1:46 am CDT Aug 28, 2026
2am CDT Aug 28, 2026-6pm CDT Sep 3, 2026
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