Harlingen, TX Weather & Growing Conditions
Tonight
67°F
Chance Rain Showers
A chance of rain showers before 2am. Mostly cloudy, with a low around 67. North northeast wind 6 to 10 mph. Chance of precipitation is 40%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 67°F | Chance Rain Showers | 6 to 10 mph NNE | 39% |
| Wednesday | 82°F | Mostly Sunny | 8 to 12 mph NE | 6% |
| Wednesday Night | 68°F | Partly Cloudy | 2 to 9 mph ESE | 1% |
| Thursday | 90°F | Mostly Sunny | 5 to 12 mph SSE | 7% |
| Thursday Night | 70°F | Showers And Thunderstorms Likely | 3 to 10 mph SW | 70% |
| Friday | 81°F | Chance Showers And Thunderstorms | 7 to 15 mph N | 49% |
| Friday Night | 64°F | Partly Cloudy then Slight Chance Rain Showers | 5 to 10 mph N | 24% |
| Saturday | 78°F | Chance Rain Showers | 10 to 14 mph N | 49% |
| Saturday Night | 61°F | Chance Showers And Thunderstorms | 10 to 16 mph N | 38% |
| Sunday | 75°F | Chance Showers And Thunderstorms | 12 to 16 mph N | 29% |
| Sunday Night | 57°F | Slight Chance Rain Showers then Partly Cloudy | 5 to 9 mph N | 17% |
| Monday | 77°F | Mostly Sunny | 10 mph NNE | 5% |
| Monday Night | 57°F | Partly Cloudy | 2 to 8 mph ENE | 0% |
| Tuesday | 80°F | Mostly Sunny | 5 to 9 mph ENE | 2% |
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 Nov 4, 2026.