Smithville, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Smithville, a city in Bastrop County, Texas.
Today
99°F
Sunny
Sunny, with a high near 99. Heat index values as high as 101. South southeast wind 0 to 5 mph.
7-day forecast for Smithville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 99°F | Sunny | 0 to 5 mph SSE | 1% |
| Tonight | 72°F | Mostly Clear | 0 to 5 mph SE | 0% |
| Sunday | 99°F | Mostly Sunny | 0 to 5 mph SSE | 0% |
| Sunday Night | 74°F | Partly Cloudy | 0 to 5 mph SSE | 2% |
| Monday | 99°F | Sunny | 0 to 5 mph SE | 11% |
| Monday Night | 74°F | Mostly Clear | 0 to 5 mph ESE | 11% |
| Tuesday | 99°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph NE | 15% |
| Tuesday Night | 74°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 0 to 5 mph ENE | 15% |
| Wednesday | 98°F | Mostly Sunny | 0 to 10 mph NE | 12% |
| Wednesday Night | 74°F | Partly Cloudy | 0 to 10 mph ENE | 4% |
| Thursday | 97°F | Mostly Sunny | 0 to 10 mph ENE | 2% |
| Thursday Night | 73°F | Partly Cloudy | 0 to 5 mph ENE | 2% |
| Friday | 97°F | Mostly Sunny | 0 to 10 mph ENE | 4% |
| Friday Night | 72°F | Partly Cloudy | 0 to 5 mph E | 4% |
Forecast source: National Weather Service (api.weather.gov) for Smithville (30.008, -97.152). Updated through the day.
Growing snapshot for Smithville
Last spring frost
Mar 12
First fall frost
Nov 19
Growing season
251 days
Hardiness zone
9a
More local growing data for Smithville: nearby ZIP 78957 weather · frost dates · planting calendar · Texas frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Smithville, Tx (1.1 mi from Smithville). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.