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South Houston, TX Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for South Houston, a city in Harris County, Texas.

Today
98°F
Sunny
Sunny. High near 98, with temperatures falling to around 95 in the afternoon. Heat index values as high as 107. South wind 0 to 10 mph.

7-day forecast for South Houston

WhenTempForecastWindPrecip
Today 98°F Sunny 0 to 10 mph S 13%
Tonight 79°F Mostly Clear 5 to 10 mph S 7%
Wednesday 97°F Sunny 0 to 10 mph S 13%
Wednesday Night 79°F Clear 0 to 10 mph S 11%
Thursday 95°F Sunny then Slight Chance Showers And Thunderstorms 0 to 10 mph S 22%
Thursday Night 79°F Slight Chance Showers And Thunderstorms then Mostly Clear 0 to 10 mph S 22%
Friday 94°F Sunny then Chance Showers And Thunderstorms 0 to 10 mph SE 26%
Friday Night 78°F Chance Showers And Thunderstorms then Mostly Clear 0 to 10 mph S 26%
Saturday 94°F Sunny then Chance Showers And Thunderstorms 0 to 10 mph E 25%
Saturday Night 79°F Chance Showers And Thunderstorms then Mostly Clear 0 to 10 mph SE 25%
Sunday 93°F Sunny then Chance Showers And Thunderstorms 0 to 10 mph SE 28%
Sunday Night 79°F Chance Showers And Thunderstorms then Partly Cloudy 0 to 10 mph S 28%
Monday 93°F Chance Showers And Thunderstorms 0 to 10 mph S 37%
Monday Night 79°F Chance Showers And Thunderstorms then Partly Cloudy 5 to 10 mph S 37%

Forecast source: National Weather Service (api.weather.gov) for South Houston (29.661, -95.228). Updated through the day.

Growing snapshot for South Houston

Last spring frost
Jan 30
First fall frost
Dec 28
Growing season
330 days
Hardiness zone
9b

More local growing data for South Houston: nearby ZIP 77587 weather · frost dates · planting calendar · Texas frost dates

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Climate data from the nearest NOAA station, Houston Hobby Ap, Tx (3.6 mi from South Houston). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.