Smithville, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Smithville, a city in Bastrop County, Texas.
Today
100°F
Sunny
Sunny, with a high near 100. Heat index values as high as 105. South wind 5 to 10 mph.
7-day forecast for Smithville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 100°F | Sunny | 5 to 10 mph S | 3% |
| Tonight | 77°F | Mostly Clear | 5 to 10 mph S | 3% |
| Wednesday | 101°F | Mostly Sunny | 5 to 10 mph S | 2% |
| Wednesday Night | 77°F | Mostly Clear | 0 to 10 mph S | 1% |
| Thursday | 100°F | Mostly Sunny | 0 to 5 mph S | 6% |
| Thursday Night | 76°F | Mostly Clear | 0 to 10 mph SSE | 6% |
| Friday | 99°F | Mostly Sunny | 0 to 5 mph SSE | 12% |
| Friday Night | 76°F | Mostly Clear | 0 to 5 mph SSE | 12% |
| Saturday | 97°F | Sunny | 0 to 5 mph SSE | 9% |
| Saturday Night | 76°F | Mostly Clear | 0 to 5 mph SSE | 6% |
| Sunday | 97°F | Sunny | 0 to 10 mph SSE | 8% |
| Sunday Night | 76°F | Mostly Clear | 0 to 10 mph SSE | 8% |
| Monday | 98°F | Mostly Sunny | 0 to 10 mph S | 5% |
| Monday Night | 76°F | Mostly Clear | 5 to 10 mph S | 5% |
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 Aug 4, 2026.