Harman US

Southlake, TX Weather & Growing Conditions

Today
99°F
Sunny
Sunny, with a high near 99. Heat index values as high as 102. South wind 5 to 10 mph.

7-day forecast

WhenTempForecastWindPrecip
Today 99°F Sunny 5 to 10 mph S 0%
Tonight 78°F Mostly Clear 10 mph S 0%
Sunday 99°F Mostly Sunny then Chance Showers And Thunderstorms 10 mph S 25%
Sunday Night 76°F Chance Showers And Thunderstorms 5 to 10 mph S 40%
Monday 95°F Chance Showers And Thunderstorms 5 mph W 40%
Monday Night 73°F Slight Chance Showers And Thunderstorms then Partly Cloudy 5 to 10 mph NE 19%
Tuesday 91°F Mostly Sunny 10 to 15 mph NNE 11%
Tuesday Night 70°F Partly Cloudy 10 mph NE 8%
Wednesday 91°F Mostly Sunny 10 mph NE 8%
Wednesday Night 72°F Partly Cloudy 5 to 10 mph E 2%
Thursday 91°F Mostly Sunny 5 to 10 mph E 4%
Thursday Night 72°F Partly Cloudy 5 to 10 mph E 3%
Friday 92°F Mostly Sunny 5 to 10 mph ESE 2%
Friday Night 72°F Mostly Cloudy 5 to 10 mph ESE 3%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for Southlake, TX

Last spring frost
Mar 14
First fall frost
Nov 17
Growing season
249 days
Hardiness zone
8b

Explore more for Southlake, TX: full frost dates · planting calendar · Texas frost dates

Climate data from the nearest NOAA station, Grapevine Dam, Tx (5.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.