Harman US

Southlake, TX Weather & Growing Conditions

This Afternoon
98°F
Mostly Sunny
Mostly sunny, with a high near 98. Heat index values as high as 99. South wind around 10 mph.

7-day forecast

WhenTempForecastWindPrecip
This Afternoon 98°F Mostly Sunny 10 mph S 0%
Tonight 78°F Partly Cloudy 10 to 15 mph SSE 0%
Sunday 99°F Mostly Sunny then Slight Chance Showers And Thunderstorms 10 mph S 18%
Sunday Night 76°F Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms 5 to 10 mph S 35%
Monday 95°F Chance Rain Showers 5 mph SW 37%
Monday Night 74°F Chance Showers And Thunderstorms then Partly Cloudy 5 to 10 mph ENE 37%
Tuesday 92°F Mostly Sunny 10 to 15 mph NNE 13%
Tuesday Night 72°F Partly Cloudy 10 to 15 mph NNE 4%
Wednesday 93°F Mostly Sunny 10 mph ENE 3%
Wednesday Night 73°F Partly Cloudy 5 to 10 mph E 1%
Thursday 94°F Mostly Sunny 5 to 10 mph E 4%
Thursday Night 74°F Partly Cloudy 5 to 10 mph E 1%
Friday 94°F Partly Sunny 5 to 10 mph ESE 2%
Friday Night 75°F Mostly Cloudy 5 to 10 mph E 1%

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.