Lavaca, AR Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lavaca, a city in Sebastian County, Arkansas.
This Afternoon
100°F
Sunny
Sunny, with a high near 100. Heat index values as high as 100. South wind around 10 mph.
7-day forecast for Lavaca
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 100°F | Sunny | 10 mph S | 0% |
| Tonight | 72°F | Mostly Clear | 0 to 10 mph SE | 0% |
| Sunday | 100°F | Mostly Sunny | 0 to 5 mph S | 2% |
| Sunday Night | 72°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 34% |
| Monday | 93°F | Chance Showers And Thunderstorms | 0 to 10 mph W | 35% |
| Monday Night | 68°F | Chance Showers And Thunderstorms then Mostly Clear | 5 to 10 mph N | 35% |
| Tuesday | 90°F | Mostly Sunny | 5 to 10 mph N | 8% |
| Tuesday Night | 63°F | Mostly Clear | 5 to 10 mph NE | 6% |
| Wednesday | 89°F | Sunny | 5 mph NE | 2% |
| Wednesday Night | 63°F | Mostly Clear | 5 mph E | 2% |
| Thursday | 89°F | Mostly Sunny | 0 to 5 mph E | 4% |
| Thursday Night | 65°F | Partly Cloudy | 5 mph E | 4% |
| Friday | 90°F | Partly Sunny | 5 mph E | 8% |
| Friday Night | 66°F | Mostly Cloudy | 5 mph E | 8% |
Forecast source: National Weather Service (api.weather.gov) for Lavaca (35.330, -94.183). Updated through the day.
Growing snapshot for Lavaca
Last spring frost
Mar 25
First fall frost
Nov 6
Growing season
224 days
Hardiness zone
8a
More local growing data for Lavaca: nearby ZIP 72941 weather · frost dates · planting calendar · Arkansas frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Ft Smith Rgnl Ap, Ar (11.2 mi from Lavaca). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.