Alton, TX Weather & Growing Conditions
This Afternoon
98°F
Sunny
Sunny, with a high near 98. Heat index values as high as 106. East wind 3 to 9 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 98°F | Sunny | 3 to 9 mph E | 8% |
| Tonight | 76°F | Mostly Clear | 1 to 13 mph SE | 3% |
| Sunday | 99°F | Mostly Sunny | 1 to 8 mph E | 2% |
| Sunday Night | 78°F | Partly Cloudy | 1 to 12 mph ESE | 0% |
| Monday | 99°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 9 mph E | 19% |
| Monday Night | 77°F | Slight Chance Showers And Thunderstorms then Clear | 0 to 12 mph ESE | 19% |
| Tuesday | 97°F | Sunny then Chance Showers And Thunderstorms | 1 to 12 mph ENE | 37% |
| Tuesday Night | 77°F | Chance Showers And Thunderstorms then Mostly Clear | 0 to 12 mph NE | 37% |
| Wednesday | 96°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 1 to 12 mph NE | 46% |
| Wednesday Night | 78°F | Chance Showers And Thunderstorms then Mostly Clear | 0 to 12 mph ENE | 46% |
| Thursday | 95°F | Chance Rain Showers then Chance Showers And Thunderstorms | 2 to 10 mph NE | 51% |
| Thursday Night | 77°F | Chance Showers And Thunderstorms | 1 to 10 mph ENE | 51% |
| Friday | 95°F | Chance Rain Showers then Chance Showers And Thunderstorms | 3 to 10 mph NE | 35% |
| Friday Night | 76°F | Chance Showers And Thunderstorms | 1 to 12 mph ENE | 35% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Alton, TX
Last spring frost
Jan 23
First fall frost
Dec 28
Growing season
340 days
Hardiness zone
10a
Explore more for Alton, TX: full frost dates · planting calendar · Texas frost dates
Climate data from the nearest NOAA station, La Joya, Tx (2.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.