Harlingen, TX Weather & Growing Conditions
Overnight
76°F
Mostly Clear
Mostly clear, with a low around 76. North northwest wind around 1 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 76°F | Mostly Clear | 1 mph NNW | 4% |
| Saturday | 97°F | Sunny | 1 to 14 mph NE | 11% |
| Saturday Night | 76°F | Mostly Clear | 1 to 13 mph SE | 4% |
| Sunday | 98°F | Sunny | 1 to 13 mph ENE | 8% |
| Sunday Night | 76°F | Partly Cloudy | 2 to 13 mph ESE | 1% |
| Monday | 98°F | Chance Showers And Thunderstorms | 1 to 13 mph ESE | 31% |
| Monday Night | 76°F | Chance Showers And Thunderstorms then Clear | 1 to 13 mph ESE | 31% |
| Tuesday | 97°F | Chance Showers And Thunderstorms | 1 to 14 mph ENE | 38% |
| Tuesday Night | 77°F | Chance Showers And Thunderstorms then Mostly Clear | 1 to 13 mph E | 38% |
| Wednesday | 97°F | Chance Showers And Thunderstorms | 2 to 15 mph NE | 41% |
| Wednesday Night | 77°F | Chance Showers And Thunderstorms then Mostly Clear | 2 to 14 mph E | 41% |
| Thursday | 97°F | Chance Rain Showers then Chance Showers And Thunderstorms | 2 to 14 mph NE | 44% |
| Thursday Night | 76°F | Chance Showers And Thunderstorms | 3 to 14 mph ENE | 44% |
| Friday | 96°F | Chance Showers And Thunderstorms | 3 to 14 mph NE | 33% |
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.