Harlingen, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Harlingen, a city in Cameron County, Texas.
Tonight
77°F
Mostly Clear
Mostly clear, with a low around 77. East northeast wind 0 to 12 mph.
7-day forecast for Harlingen
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 77°F | Mostly Clear | 0 to 12 mph ENE | 4% |
| Saturday | 98°F | Sunny | 1 to 12 mph ENE | 13% |
| Saturday Night | 76°F | Mostly Clear | 1 to 12 mph ESE | 0% |
| Sunday | 99°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 1 to 12 mph ESE | 17% |
| Sunday Night | 78°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 2 to 12 mph SE | 17% |
| Monday | 99°F | Sunny then Slight Chance Showers And Thunderstorms | 1 to 13 mph ESE | 21% |
| Monday Night | 78°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 1 to 13 mph ESE | 21% |
| Tuesday | 98°F | Sunny then Chance Showers And Thunderstorms | 1 to 13 mph E | 42% |
| Tuesday Night | 78°F | Chance Showers And Thunderstorms then Mostly Clear | 0 to 13 mph E | 42% |
| Wednesday | 97°F | Chance Rain Showers then Chance Showers And Thunderstorms | 2 to 13 mph ENE | 41% |
| Wednesday Night | 78°F | Chance Showers And Thunderstorms then Mostly Clear | 1 to 13 mph E | 41% |
| Thursday | 97°F | Chance Rain Showers then Chance Showers And Thunderstorms | 3 to 13 mph ENE | 41% |
| Thursday Night | 78°F | Chance Showers And Thunderstorms | 3 to 13 mph ENE | 41% |
| Friday | 96°F | Chance Showers And Thunderstorms | 5 to 13 mph NE | 39% |
Forecast source: National Weather Service (api.weather.gov) for Harlingen (26.191, -97.697). Updated through the day.
Growing snapshot for Harlingen
Last spring frost
Jan 9
First fall frost
Jan 3
Growing season
365 days
Hardiness zone
10a
More local growing data for Harlingen: nearby ZIP 78552 weather · frost dates · planting calendar · Texas frost dates
Nearby towns & communities
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Cameron Park
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Combes
Del Mar Heights
El Camino Angosto
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Green Valley Farms
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
Olmito
Climate data from the nearest NOAA station, Harlingen, Tx (4.9 mi from Harlingen). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.