Harlingen, TX Weather & Growing Conditions
Tonight
76°F
Mostly Clear
Mostly clear, with a low around 76. East wind 0 to 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 76°F | Mostly Clear | 0 to 6 mph E | 1% |
| Saturday | 98°F | Sunny | 1 to 13 mph NE | 12% |
| Saturday Night | 76°F | Mostly Clear | 1 to 13 mph ESE | 0% |
| Sunday | 98°F | Sunny then Slight Chance Showers And Thunderstorms | 1 to 13 mph ESE | 15% |
| Sunday Night | 76°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 2 to 13 mph SE | 15% |
| Monday | 98°F | Sunny then Slight Chance Showers And Thunderstorms | 1 to 14 mph ESE | 20% |
| Monday Night | 76°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 1 to 14 mph ESE | 20% |
| Tuesday | 98°F | Sunny then Chance Showers And Thunderstorms | 1 to 14 mph E | 40% |
| Tuesday Night | 77°F | Chance Showers And Thunderstorms then Mostly Clear | 1 to 14 mph E | 40% |
| Wednesday | 98°F | Chance Showers And Thunderstorms | 2 to 14 mph ENE | 39% |
| Wednesday Night | 77°F | Chance Showers And Thunderstorms then Mostly Clear | 1 to 14 mph E | 39% |
| Thursday | 97°F | Chance Showers And Thunderstorms | 2 to 14 mph ENE | 39% |
| Thursday Night | 77°F | Chance Showers And Thunderstorms | 3 to 14 mph ENE | 39% |
| Friday | 96°F | Chance Showers And Thunderstorms | 5 to 14 mph NE | 38% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Harlingen, TX
Last spring frost
Jan 8
First fall frost
Dec 29
Growing season
357 days
Hardiness zone
10a
Explore more for Harlingen, TX: full frost dates · planting calendar · Texas frost dates
Climate data from the nearest NOAA station, Harlingen Rio Grande Ap, Tx (2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.