Sullivan City, TX Weather & Growing Conditions
This Afternoon
100°F
Sunny
Sunny, with a high near 100. Heat index values as high as 107. East wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 100°F | Sunny | 5 mph E | 0% |
| Tonight | 78°F | Partly Cloudy | 1 to 9 mph ESE | 1% |
| Monday | 100°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 9 mph ESE | 15% |
| Monday Night | 78°F | Mostly Clear | 0 to 12 mph ESE | 9% |
| Tuesday | 97°F | Sunny then Chance Showers And Thunderstorms | 1 to 10 mph E | 38% |
| Tuesday Night | 77°F | Chance Showers And Thunderstorms then Mostly Clear | 0 to 10 mph ENE | 38% |
| Wednesday | 96°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 1 to 10 mph ENE | 45% |
| Wednesday Night | 77°F | Chance Showers And Thunderstorms | 0 to 10 mph NE | 45% |
| Thursday | 96°F | Chance Rain Showers then Chance Showers And Thunderstorms | 1 to 8 mph ENE | 48% |
| Thursday Night | 76°F | Chance Showers And Thunderstorms | 0 to 8 mph ENE | 48% |
| Friday | 96°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 1 to 8 mph ENE | 35% |
| Friday Night | 75°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 9 mph ENE | 35% |
| Saturday | 96°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 2 to 8 mph ENE | 24% |
| Saturday Night | 76°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 1 to 8 mph E | 24% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Sullivan City, TX
Last spring frost
Jan 23
First fall frost
Dec 28
Growing season
340 days
Hardiness zone
10a
Explore more for Sullivan City, TX: full frost dates · planting calendar · Texas frost dates
Climate data from the nearest NOAA station, La Joya, Tx (13.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.