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Monthly
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Current
Hourly
7 Days
14 Days
Weekend
Monthly
°C
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Port Lavaca, TX
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March
Average Temperature
High
22°
Feels 22
Low
14°
Feels 13
Average Precipitation
6 Days
Rain amount
34.8mm
Snow amount
0cm
Content continues below
Daily Historical Averages
March 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
24°
19
27°
20
28°
21
29°
22
28°
23
29°
24
29°
25
29°
26
30°
27
28°
28
28°
29
28°
30
29°
31
31°
Forecast
Wednesday, March 18, 2026
Day
24°
Feels 24
Wind
23 km/h S
Gust
34 km/h
Humidity
47%
P.O.P
20%
Night
13°
Feels 13
Wind
22 km/h SE
Gust
32 km/h
Humidity
90%
P.O.P
10%
Historical Averages
Mar 18
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.