Mercedes, TX Weather & Growing Conditions
This Afternoon
98°F
Sunny
Sunny, with a high near 98. East wind around 12 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 98°F | Sunny | 12 mph E | 4% |
| Tonight | 76°F | Mostly Clear | 1 to 13 mph ESE | 2% |
| Sunday | 100°F | Mostly Sunny | 1 to 10 mph E | 9% |
| Sunday Night | 77°F | Partly Cloudy | 1 to 13 mph ESE | 1% |
| Monday | 99°F | Sunny then Chance Showers And Thunderstorms | 1 to 13 mph ESE | 33% |
| Monday Night | 77°F | Chance Showers And Thunderstorms then Mostly Clear | 1 to 14 mph ESE | 33% |
| Tuesday | 98°F | Sunny then Chance Showers And Thunderstorms | 2 to 14 mph ENE | 43% |
| Tuesday Night | 77°F | Chance Showers And Thunderstorms then Mostly Clear | 0 to 14 mph ENE | 43% |
| Wednesday | 97°F | Chance Rain Showers then Chance Showers And Thunderstorms | 2 to 14 mph NE | 53% |
| Wednesday Night | 77°F | Chance Showers And Thunderstorms | 2 to 13 mph ENE | 53% |
| Thursday | 96°F | Chance Rain Showers then Chance Showers And Thunderstorms | 3 to 13 mph NE | 49% |
| Thursday Night | 77°F | Chance Showers And Thunderstorms | 2 to 13 mph ENE | 49% |
| Friday | 95°F | Chance Rain Showers then Chance Showers And Thunderstorms | 3 to 12 mph NE | 52% |
| Friday Night | 76°F | Chance Showers And Thunderstorms | 2 to 13 mph NE | 52% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Mercedes, TX
Last spring frost
Jan 8
First fall frost
Dec 31
Growing season
365 days
Hardiness zone
10a
Explore more for Mercedes, TX: full frost dates · planting calendar · Texas frost dates
Climate data from the nearest NOAA station, Weslaco, Tx (3.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.