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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.

This Afternoon
94°F
Sunny
Sunny. High near 94, with temperatures falling to around 91 in the afternoon. Heat index values as high as 101. Southeast wind 5 to 10 mph.

7-day forecast for South Houston

WhenTempForecastWindPrecip
This Afternoon 94°F Sunny 5 to 10 mph SE 0%
Tonight 77°F Mostly Clear 0 to 10 mph SE 5%
Sunday 96°F Mostly Sunny 0 to 10 mph E 10%
Sunday Night 78°F Mostly Cloudy 0 to 10 mph SE 5%
Monday 97°F Sunny 0 to 5 mph E 6%
Monday Night 79°F Mostly Clear 0 to 5 mph S 6%
Tuesday 98°F Sunny 5 mph NE 10%
Tuesday Night 81°F Mostly Clear 0 to 5 mph SE 10%
Wednesday 97°F Sunny 0 to 10 mph NE 10%
Wednesday Night 80°F Mostly Clear 0 to 10 mph E 10%
Thursday 95°F Mostly Sunny 5 to 10 mph E 3%
Thursday Night 78°F Mostly Clear 0 to 10 mph E 3%
Friday 94°F Sunny 5 to 10 mph E 3%
Friday Night 77°F Mostly Clear 0 to 10 mph E 3%

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 Sep 19, 2026.