Rio Hondo, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Rio Hondo, a city in Cameron County, Texas.
This Afternoon
81°F
Sunny
Sunny, with a high near 81. Northeast wind around 13 mph.
7-day forecast for Rio Hondo
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 81°F | Sunny | 13 mph NE | 1% |
| Tonight | 69°F | Mostly Clear | 3 to 9 mph E | 1% |
| Thursday | 89°F | Mostly Sunny | 5 to 13 mph SE | 14% |
| Thursday Night | 70°F | Partly Cloudy then Chance Showers And Thunderstorms | 3 to 10 mph S | 60% |
| Friday | 80°F | Showers And Thunderstorms Likely | 6 to 15 mph N | 73% |
| Friday Night | 65°F | Slight Chance Rain Showers then Mostly Cloudy | 7 to 10 mph N | 16% |
| Saturday | 80°F | Partly Sunny then Chance Rain Showers | 12 to 15 mph NNE | 47% |
| Saturday Night | 64°F | Showers And Thunderstorms Likely | 12 to 15 mph NNE | 67% |
| Sunday | 74°F | Showers And Thunderstorms Likely | 18 mph N | 73% |
| Sunday Night | 57°F | Chance Showers And Thunderstorms | 14 to 18 mph NNW | 38% |
| Monday | 72°F | Slight Chance Rain Showers | 10 to 15 mph NNW | 16% |
| Monday Night | 58°F | Slight Chance Rain Showers | 3 to 8 mph NNW | 15% |
| Tuesday | 76°F | Mostly Sunny then Slight Chance Rain Showers | 6 to 10 mph N | 15% |
| Tuesday Night | 60°F | Partly Cloudy then Slight Chance Rain Showers | 1 to 7 mph N | 15% |
Forecast source: National Weather Service (api.weather.gov) for Rio Hondo (26.235, -97.581). Updated through the day.
Growing snapshot for Rio Hondo
Last spring frost
Jan 8
First fall frost
Dec 29
Growing season
357 days
Hardiness zone
10a
More local growing data for Rio Hondo: nearby ZIP 78550 weather · frost dates · planting calendar · Texas frost dates
Nearby towns & communities
Arroyo Colorado Estates
Arroyo Gardens
Bayview
Bixby
Bluetown
Brownsville
Cameron Park
Chula Vista
Combes
Del Mar Heights
El Camino Angosto
Encantada-Ranchito-El Calaboz
Green Valley Farms
Harlingen
Iglesia Antigua
Indian Lake
Juarez
La Feria
La Feria North
La Paloma
La Tina Ranch
Lago
Laguna Heights
Laguna Vista
Las Palmas II
Lasana
Laureles
Los Fresnos
Los Indios
Lozano
Climate data from the nearest NOAA station, Harlingen Rio Grande Ap, Tx (2 mi from Rio Hondo). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 5, 2026.