PORT LAVACA, TX 77979 Weather Forecast & Current Conditions

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77979 WEATHER WARNINGS (SEVERE T-STORM & TORNADO)

CURRENT WEATHER
CALHOUN CNTY ARPT, TX Current Weather
8:15 PM CDT AUG 19, 2026
Clear 84°F
Feels Like:	96°F
Dewpoint:	79°F
Rel. Hum.:	85%
Visibility:	8 miles
Wind:	SSE at 9 mph
Pressure:	29.94 inches
Last 72 hours
Local Area Snow Depth
Texas Current Weather
Texas MOS Forecast Weather

Regional Weather Maps

(Automated weather data from NWS/FAA)

77979 WEATHER FORECAST
10-Day model forecast maps 2026 Hurricanes	PORT LAVACA, TX 77979 Weather Forecast	Snowfall Forecast pages Snow Depth pages

TONIGHT
Mostly clear this evening, then becoming partly cloudy. Lows in the lower 80s. South winds 10 to 15 mph.

THURSDAY
Partly cloudy in the morning, then clearing. Highs in the lower 90s. South winds 5 to 10 mph, increasing to 10 to 15 mph in the afternoon. Heat index values up to 112.

THURSDAY NIGHT
Mostly clear. Lows in the lower 80s. South winds 10 to 15 mph, diminishing to 5 to 10 mph after midnight.

FRIDAY
Sunny in the morning, then becoming partly cloudy. Highs in the lower 90s. South winds 5 to 10 mph, increasing to 10 to 15 mph in the afternoon. Heat index values up to 111.

FRIDAY NIGHT
Partly cloudy in the evening, then becoming mostly clear. Lows in the upper 70s. South winds 10 to 15 mph, diminishing to 5 to 10 mph after midnight.

SATURDAY
Sunny. Highs in the lower 90s. Heat index values up to 110.

SATURDAY NIGHT
Mostly clear. Lows in the upper 70s.

SUNDAY
Sunny. Highs in the lower 90s.

SUNDAY NIGHT
Mostly clear. Lows in the upper 70s.

MONDAY
Sunny. Highs in the lower 90s.

MONDAY NIGHT
Mostly clear. Lows in the upper 70s.

TUESDAY
Sunny. Highs in the lower 90s.

TUESDAY NIGHT
Mostly clear. Lows around 80.

77979 WEATHER SATELLITE LOOPS

Visible Weather Satellite
PORT LAVACA, TX 77979

Infrared Weather Satellite
PORT LAVACA, TX 77979

77979 WEATHER RADAR LOOP

NEXRAD Weather Radar
PORT LAVACA, TX 77979

MOS COMPUTER WEATHER FORECAST

CALHOUN CNTY ARPT, TX 3 hourly weather forecast

weather forecast created 7:00 AM CDT 8/19/2026

DAY/DATE &
WEATHER FORECAST SUMMARY

Wednesday
19 AUG 2026

1 PM

93°

106°

Partly Cloudy

1%

0% Thunder
( 11% severe)

S 12

58%

76°

High 94°

4 PM

93°

106°

Mostly Cloudy

S 13

58%

76°

Partly Cloudy

7 PM

88°

100°

Partly Cloudy

0%

0% Thunder
( 2% severe)

SSE 13

70%

77°

10 PM

82°

93°

Partly Cloudy

SSE 10

94%

80°

Thursday
20 AUG 2026

1 AM

81°

90°

Partly Cloudy

0%

0% Thunder
( 6% severe)

S 8

97%

80°

Low 78°

4 AM

80°

87°

Partly Cloudy

S 8

97%

79°

High 96°

7 AM

79°

84°

Partly Cloudy

1%

0% Thunder
( 11% severe)

S 7

100%

79°

Partly Cloudy

10 AM

89°

105°

Partly Cloudy

S 10

73%

79°

1 PM

94°

110°

Clear

1%

0% Thunder
( 18% severe)

S 12

60%

78°

4 PM

94°

109°

Clear

S 13

58%

77°

7 PM

89°

105°

Partly Cloudy

0%

0% Thunder
( 3% severe)

S 13

73%

79°

10 PM

82°

94°

Clear

S 9

97%

81°

Friday
21 AUG 2026

1 AM

81°

91°

Clear

0%

0% Thunder
( 6% severe)

S 7

100%

81°

Low 77°

4 AM

80°

87°

Partly Cloudy

SSW 7

100%

80°

High 97°

7 AM

79°

84°

Partly Cloudy

0%

0% Thunder
( 10% severe)

SSW 5

100%

79°

Partly Cloudy

10 AM

88°

103°

Partly Cloudy

SSW 7

75%

79°

1 PM

95°

110°

Partly Cloudy

0%

0% Thunder
( 19% severe)

S 8

56%

77°

4 PM

95°

110°

Partly Cloudy

SSE 12

56%

77°

7 PM

89°

103°

Partly Cloudy

S 13

70%

78°


CALHOUN CNTY ARPT, TX extended weather forecast
Saturday 22 AUG 2026	Sunday 23 AUG 2026	Monday 24 AUG 2026	Tuesday 25 AUG 2026	Wednesday 26 AUG 2026
Low 80°	Low 78°	Low 77°	Low 77°	Low 80°
High 97°	High 97°	High 97°	High 97°	High 99°

Clear 13% Rain	Clear 15% Rain	Clear 11% Rain	Clear 18% Rain	Clear 19% Rain

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