Hallettsville, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hallettsville, a city in Lavaca County, Texas.
Today
99°F
Sunny
Sunny, with a high near 99. Heat index values as high as 108. South wind 5 to 15 mph.
7-day forecast for Hallettsville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 99°F | Sunny | 5 to 15 mph S | 2% |
| Tonight | 75°F | Mostly Clear | 5 to 15 mph SSE | 2% |
| Wednesday | 99°F | Mostly Sunny | 5 to 15 mph SSE | 3% |
| Wednesday Night | 76°F | Mostly Clear | 0 to 15 mph SSE | 3% |
| Thursday | 99°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 10 mph SSE | 15% |
| Thursday Night | 76°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 0 to 15 mph SSE | 15% |
| Friday | 97°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 0 to 10 mph SSE | 20% |
| Friday Night | 74°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 0 to 10 mph SSE | 20% |
| Saturday | 96°F | Sunny | 0 to 10 mph SE | 11% |
| Saturday Night | 74°F | Mostly Clear | 0 to 10 mph SE | 11% |
| Sunday | 95°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 10 mph SE | 15% |
| Sunday Night | 75°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 0 to 10 mph SSE | 15% |
| Monday | 96°F | Mostly Sunny | 0 to 10 mph SSE | 11% |
| Monday Night | 75°F | Mostly Clear | 5 to 15 mph SSE | 11% |
Forecast source: National Weather Service (api.weather.gov) for Hallettsville (29.443, -96.944). Updated through the day.
Growing snapshot for Hallettsville
Last spring frost
Feb 17
First fall frost
Dec 4
Growing season
297 days
Hardiness zone
9a
More local growing data for Hallettsville: nearby ZIP 77964 weather · frost dates · planting calendar · Texas frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Hallettsville 2 N, Tx (9 mi from Hallettsville). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.