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

Weather in Port Lavaca, Texas

Roses open on the Piedmont edge. Day 59 of spring. Read this microseason across nine climate regions →

Port Lavaca, TX
Sunday, May 17 at 2:57 AM
78
°
Mostly Clear
Feels like
84°
Humidity
91%
Wind
12 mph
Sunrise
6:34 AM
Sunset
8:10 PM
Port Lavaca, TX
Hour by hour · 24h
77°
9p
76°
10p
74°
11p
74°
12a
73°
1a
73°
2a
73°
3a
72°
4a
72°
5a
72°
6a
73°
7a
76°
8a
79°
9a
82°
10a
84°
11a
86°
12p
87°
1p
88°
2p
87°
3p
87°
4p
84°
5p
84°
6p
82°
7p
80°
8p
L 72°H 88°
Port Lavaca, TX
7-day forecast
  1. Today
    May 16
    Thunderstorm
    87°74°
  2. Sunday
    May 17
    Thunderstorm
    11%
    87°77°
  3. Monday
    May 18
    Thunderstorm
    88°78°
  4. Tuesday
    May 19
    Light Drizzle
    50%
    90°77°
  5. Wednesday
    May 20
    Light Showers
    52%
    88°76°
  6. Thursday
    May 21
    Light Drizzle
    54%
    89°76°
  7. Friday
    May 22
    Overcast
    57%
    87°77°
Port Lavaca, TX
Anemometer · 24h winds · from true
NESW
From · True
SE
140° · backing 12°
Direction
SE
140°
Sustained
12
mph
Gust
25
mph
Peak 24h
27
avg 13
Beaufort · 3 · GENTLE 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 13 · pk 27 @ 1:00a
−24h−18h−12h−6hnow
Light breeze backing 12° from the se.
Port Lavaca, TX
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
1010.2
-0.3 mb in 3h · falling · 29.83 inHg
Now
1010.2
mb
3h
-0.3
mb
12h
-1.4
mb
24h
-1.1
mb
Regime · CHANGE
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 10091013
−24h−18h−12h−6hnow
Air sits at the threshold — small shifts decide the day.
Port Lavaca, TX
Air quality
41
AQI
Good
PM 2.5
6.5 μg/m³
PM 10
9.8 μg/m³
NO₂
1.0 μg/m³
Ozone
75.0 μg/m³
UV Index
0.0 Low
Port Lavaca, TX
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
11:10 AM
Sunrise
6:34 AM
Daylight
13h 36m
Sunset
8:10 PM
Civil dusk
1:37 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Port Lavaca, TX
The moon
New Moon
0% illuminated
Moonrise
11:53 AM
Moonset
1:31 AM
In sign
♊︎ Gemini
Port Lavaca, TX
Microseason · 28 of 72
May 16–20

Roses open on the Piedmont edge

insect
Jan 137% of the yearDec 31

Read this microseason across nine climate regions →

Port Lavaca at a glance

  • Today vs. normal: 5°F below the seasonal normal for this latitude
  • Last frost: February 7 (climatological average for this latitude)
  • Microseason: 28 of 72, May 16–20
  • Planting window: Direct sow okra, melons, and southern peas. Thin carrot rows.

Right now in the garden

Peak growing season

As of May 17, 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.

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.