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
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| 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.