Hallettsville, TX Weather & Growing Conditions
Today
99°F
Sunny
Sunny, with a high near 99. Heat index values as high as 109. South wind 5 to 15 mph, with gusts as high as 20 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 99°F | Sunny | 5 to 15 mph S | 1% |
| Tonight | 75°F | Mostly Clear | 0 to 15 mph SSE | 1% |
| Wednesday | 99°F | Sunny | 0 to 15 mph SSE | 3% |
| Wednesday Night | 75°F | Mostly Clear | 0 to 15 mph SSE | 3% |
| Thursday | 98°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 10 mph SSE | 16% |
| Thursday Night | 76°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 0 to 10 mph SSE | 16% |
| Friday | 96°F | Slight Chance Showers And Thunderstorms | 0 to 10 mph SE | 23% |
| Friday Night | 74°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 0 to 10 mph SSE | 23% |
| Saturday | 95°F | Sunny | 0 to 10 mph SE | 13% |
| Saturday Night | 74°F | Mostly Clear | 0 to 10 mph SE | 13% |
| Sunday | 94°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 10 mph ESE | 17% |
| Sunday Night | 74°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 0 to 10 mph SSE | 17% |
| Monday | 95°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 10 mph SSE | 16% |
| Monday Night | 75°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 5 to 15 mph SSE | 16% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Hallettsville, TX
Last spring frost
Feb 17
First fall frost
Dec 4
Growing season
297 days
Hardiness zone
9a
Explore more for Hallettsville, TX: full frost dates · planting calendar · Texas frost dates
Climate data from the nearest NOAA station, Hallettsville 2 N, Tx (9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.