Lavaca, AR Weather Forecast
Local 7-day forecast
Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Lavaca, AR in one place.
A chance of showers and thunderstorms. Mostly cloudy, with a high near 97. Heat index values as high as 104. East wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Local Weather Overview
This forecast page for Lavaca, AR is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Aug 23, 2026 3:45 PM CDT.
The active forecast window currently covers Aug 24 to Aug 29, 2026 for Lavaca, AR.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Aug 24 to Aug 29, 2026
- Latest sync
- Aug 23, 2026 3:45 PM CDT
- Forecast office
- TSA
- Source
- NOAA / NWS
Daily Outlook
This Week in Lavaca
Tuesday looks like the warmest upcoming period in Lavaca at 103 degrees F.
Thursday Night is the coolest period ahead with temperatures near 72 degrees F.
The strongest winds are forecast for Monday at about 10 to 15 mph E.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 23, 2026 3:45 PM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- TSA
- Radar station
- KSRX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A slight chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 74. Heat index values as high as 103. East wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Mostly sunny, with a high near 103. Southeast wind 5 to 10 mph.
Partly cloudy, with a low around 75. East wind around 5 mph.
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 100. Southeast wind around 5 mph. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 74. Northeast wind 0 to 5 mph. Chance of precipitation is 20%.
Sunny, with a high near 100. Northeast wind 0 to 5 mph.
Mostly clear, with a low around 72. Northeast wind 0 to 5 mph.
Sunny, with a high near 99. East wind around 5 mph.
Mostly clear, with a low around 73. East wind around 5 mph.
Sunny, with a high near 100. Southeast wind around 5 mph.
A slight chance of rain showers between 7pm and 1am. Mostly clear, with a low around 75. Southeast wind 5 to 10 mph.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Monday
Aug 24
|
Chance Showers And Thunderstorms
|
97°F |
10 to 15 mph
E
|
|
Monday Night
Aug 24
|
Slight Chance Showers And Thunderstorms then Partly Cloudy
|
74°F |
10 to 15 mph
E
|
|
Tuesday
Aug 25
|
Mostly Sunny
|
103°F |
5 to 10 mph
SE
|
|
Tuesday Night
Aug 25
|
Partly Cloudy
|
75°F |
5 mph
E
|
|
Wednesday
Aug 26
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
100°F |
5 mph
SE
|
|
Wednesday Night
Aug 26
|
Slight Chance Showers And Thunderstorms then Partly Cloudy
|
74°F |
0 to 5 mph
NE
|
|
Thursday
Aug 27
|
Sunny
|
100°F |
0 to 5 mph
NE
|
|
Thursday Night
Aug 27
|
Mostly Clear
|
72°F |
0 to 5 mph
NE
|
|
Friday
Aug 28
|
Sunny
|
99°F |
5 mph
E
|
|
Friday Night
Aug 28
|
Mostly Clear
|
73°F |
5 mph
E
|
|
Saturday
Aug 29
|
Sunny
|
100°F |
5 mph
SE
|
|
Saturday Night
Aug 29
|
Slight Chance Rain Showers
|
75°F |
5 to 10 mph
SE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Lavaca.