Weather StoryAlmanac, microseasons, and the day's weather story.

Port Lavaca, Texas Weather

Fireflies pulse through the magnolias. Day 77 of spring. Read this microseason across nine climate regions →

Port Lavaca weather forecast — hour by hour, 7-day outlook, NOAA radar

Port Lavaca, TX
Thursday, June 4 at 1:42 AM
77
°
Overcast
Feels like
84°
Humidity
89%
Wind
7 mph
Sunrise
6:28 AM
Sunset
8:20 PM
Port Lavaca, TX
Hour by hour · 24h
24-Hour ForecastPort Lavaca, TX: 24-hour forecast. Temperatures range from 75 to 80 degrees Fahrenheit with a 28% chance of precipitation at 6 AM.
L 75°H 80°
Port Lavaca, TX
7-day forecast
  1. Today
    Jun 3
    Thunderstorm
    71%
    0.34″
    83°76°
  2. Thursday
    Jun 4
    Heavy Showers
    28%
    0.98″
    80°75°-3°
  3. Friday
    Jun 5
    Heavy Showers
    16%
    1.3″
    87°75°+7°
  4. Saturday
    Jun 6
    Light Drizzle
    19%
    87°77°
  5. Sunday
    Jun 7
    Overcast
    15%
    88°78°+1°
  6. Monday
    Jun 8
    Overcast
    13%
    89°79°+1°
  7. Tuesday
    Jun 9
    Light Drizzle
    88°77°-1°
Port Lavaca, TX
Anemometer · 24h winds · from true
NESW
From · True
ENE
060° · backing 55°
Direction
ENE
060°
Sustained
7
mph
Gust
13
mph
Peak 24h
19
avg 7
Beaufort · 2 · LIGHT BRZ
0
CALM
<1
1
LIGHT AIR
1–3
2
LIGHT BRZ
4–7
3
GENTLE BRZ
8–12
4
MOD BRZ
13–18
5
FRESH BRZ
19–24
6
STRONG BRZ
25–31
7
NEAR GALE
32–38
24h · sust vs gust · mph
avg 7 · pk 19 @ 2:00a
01020MPHB1B2B3B4B5-21h-18h-15h-12h-9h-6h-3h-24hNOWpk 1811SUSTGUST
−24h−18h−12h−6hnow
Light breeze backing 55° from the ene.
Port Lavaca, TX
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
1012.8
+0.1 mb in 3h · steady · 29.91 inHg
Now
1012.8
mb
3h
+0.1
mb
12h
-1.3
mb
24h
+0.4
mb
Regime · CHANGE
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 10131016
9951000STORM|RAIN10051010RAIN|CHG1015CHG|FAIR10201025FAIR|DRY1030-21h-18h-15h-12h-9h-6h-3h-24hNOW1015.51012.71014.0
−24h−18h−12h−6hnow
Air sits at the threshold — small shifts decide the day.
Port Lavaca, TX
Air quality
33
AQI
Good
+6 in 6h

AQI 29 (Good), driven by Ozone. AQI up 6 over the last 6 hours (gradual rise).

OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.

PM 2.5Good
2.9μg/m³
PM 10Good
4μg/m³
NO₂Good
2μg/m³
OzoneDRIVERModerate
62μg/m³
UV IndexLow
0.0
Port Lavaca, TX
Sky cover · visibility · 24h
Cloud cover
100%
OVERCAST
100%0%−24h−18h−12h−6hnow

Visibility
29.8mi
UNLIMITED
39 mi0 mi−24h−18h−12h−6hnow
Earth · GOES-19 ABI
Full Disk · Visible · GeoColor
GOES-19 full disk Visible · GeoColor
True-color daytime, blue/IR sandwich at night
01:42 UTC ·Port Lavaca, TX · NOAA NESDIS / STAR · 21696x21696 px
Continental US · GOES-19 ABI
CONUS Sector · Visible · GeoColor
GOES-19 CONUS Visible · GeoColor
Daytime true-color, blue-light/IR sandwich at night
01:42 UTC ·Port Lavaca, TX · NOAA NESDIS / STAR · 5-min cadence · 10000x6000 px
Port Lavaca, TX
Satellite · infrared · animated
Port Lavaca, TX
Loading IR frames…
IR · cloud-top temp© RainViewer · Carto
Port Lavaca, TX
Almanac · Thursday, June 4
A summer fog for fair, a winter fog for rain.
Civil dawn
11:03 AM
Sunrise
6:28 AM
Daylight
13h 52m
Sunset
8:20 PM
Civil dusk
1:48 AM
Planting note
Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Port Lavaca, TX
The moon
Waning Gibbous
88% illuminated
Moonrise
4:24 AM
Moonset
3:00 PM
In sign
♑︎ Capricorn
Port Lavaca, TX
Microseason
Jun 1–5

Fireflies pulse through the magnolias

plant
Jan 142% of the yearDec 31

Read this microseason across nine climate regions →

Port Lavaca at a glance

  • Today vs. normal: 9°F below the seasonal normal for this latitude
  • Last frost: February 7 (climatological average for this latitude)
  • Microseason: Jun 1–5
  • Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.

Right now in the garden

Peak growing season

As of June 4, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.

SPC Convective Outlook

Storm Prediction Center — Port Lavaca

SPC has placed Port Lavaca in the General Thunderstorms category for severe thunderstorms today.

  • TODAYTSTMGeneral Thunderstorms
  • TOMORROWTSTMGeneral Thunderstorms
  • DAY 3TSTMGeneral Thunderstorms

Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.

Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.

ZIP codes in Port Lavaca

Climate normals from the Open-Meteo Climate API. Köppen approximation from NOAA NCEI U.S. Climate Regions. See methodology for data sources, editorial rules, and corrections. Maintainer: Brian Tighe.