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Smithville, TX Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Smithville, a city in Bastrop County, Texas.

Tonight
72°F
Mostly Clear
Mostly clear, with a low around 72. South southeast wind 0 to 5 mph.

7-day forecast for Smithville

WhenTempForecastWindPrecip
Tonight 72°F Mostly Clear 0 to 5 mph SSE 0%
Saturday 98°F Sunny 0 to 5 mph SE 0%
Saturday Night 72°F Mostly Clear 0 to 5 mph SSE 0%
Sunday 98°F Mostly Sunny 0 to 5 mph SSE 0%
Sunday Night 74°F Partly Cloudy 0 to 10 mph SSE 6%
Monday 98°F Mostly Sunny 0 to 5 mph SE 13%
Monday Night 74°F Mostly Clear 0 to 5 mph ESE 13%
Tuesday 99°F Sunny 0 to 5 mph NE 11%
Tuesday Night 75°F Slight Chance Showers And Thunderstorms 0 to 5 mph ENE 15%
Wednesday 99°F Mostly Sunny 0 to 10 mph NE 7%
Wednesday Night 74°F Partly Cloudy 0 to 5 mph ENE 6%
Thursday 98°F Mostly Sunny 0 to 10 mph ENE 3%
Thursday Night 73°F Partly Cloudy 0 to 5 mph ENE 3%
Friday 97°F Mostly Sunny 0 to 10 mph ENE 3%

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

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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.