Lavaca, AR Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lavaca, a city in Sebastian County, Arkansas.
Today
98°F
Sunny
Sunny, with a high near 98. Heat index values as high as 103. East wind around 5 mph.
7-day forecast for Lavaca
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 98°F | Sunny | 5 mph E | 0% |
| Tonight | 74°F | Mostly Clear | 5 mph SE | 0% |
| Wednesday | 100°F | Sunny | 5 mph SE | 3% |
| Wednesday Night | 76°F | Partly Cloudy | 5 mph SE | 7% |
| Thursday | 99°F | Mostly Sunny | 0 to 5 mph S | 14% |
| Thursday Night | 75°F | Chance Showers And Thunderstorms | 0 to 5 mph SE | 29% |
| Friday | 95°F | Chance Showers And Thunderstorms | 0 to 5 mph SE | 38% |
| Friday Night | 74°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SE | 38% |
| Saturday | 96°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph SE | 16% |
| Saturday Night | 74°F | Mostly Clear | 0 to 5 mph SE | 14% |
| Sunday | 97°F | Sunny | 0 to 5 mph S | 7% |
| Sunday Night | 75°F | Mostly Clear | 0 to 5 mph SE | 7% |
| Monday | 97°F | Sunny | 0 to 10 mph S | 9% |
| Monday Night | 75°F | Mostly Clear | 5 to 10 mph SE | 9% |
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 Aug 4, 2026.