La Rosita, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for La Rosita, a community in Starr County, Texas.
Overnight
78°F
Partly Cloudy
Partly cloudy, with a low around 78. East southeast wind around 1 mph.
7-day forecast for La Rosita
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 78°F | Partly Cloudy | 1 mph ESE | 0% |
| Saturday | 102°F | Sunny | 1 to 5 mph ESE | 0% |
| Saturday Night | 78°F | Mostly Clear | 2 to 7 mph SE | 0% |
| Sunday | 103°F | Mostly Sunny | 3 mph ESE | 0% |
| Sunday Night | 78°F | Partly Cloudy | 2 to 7 mph SE | 1% |
| Monday | 103°F | Sunny | 1 to 7 mph ESE | 10% |
| Monday Night | 78°F | Mostly Clear | 1 to 8 mph ESE | 10% |
| Tuesday | 100°F | Sunny then Chance Showers And Thunderstorms | 1 to 8 mph E | 27% |
| Tuesday Night | 78°F | Chance Showers And Thunderstorms then Mostly Clear | 0 to 8 mph E | 27% |
| Wednesday | 100°F | Chance Showers And Thunderstorms | 0 to 7 mph ENE | 43% |
| Wednesday Night | 78°F | Chance Showers And Thunderstorms | 0 to 6 mph NE | 43% |
| Thursday | 98°F | Chance Rain Showers | 0 to 6 mph ENE | 48% |
| Thursday Night | 77°F | Chance Showers And Thunderstorms | 0 to 6 mph ENE | 48% |
| Friday | 100°F | Chance Rain Showers | 1 to 6 mph ENE | 30% |
Forecast source: National Weather Service (api.weather.gov) for La Rosita (26.402, -98.932). Updated through the day.
Growing snapshot for La Rosita
Last spring frost
Jan 9
First fall frost
Jan 1
Growing season
363 days
Hardiness zone
9b
More local growing data for La Rosita: nearby ZIP 78585 weather · frost dates · planting calendar · Texas frost dates
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Falcon Heights
Climate data from the nearest NOAA station, Falcon Dam, Tx (6.2 mi from La Rosita). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.