Harlingen, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Harlingen, a city in Cameron County, Texas.
This Afternoon
93°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 5pm. Partly sunny. High near 93, with temperatures falling to around 87 in the afternoon. West wind around 7 mph. Chance of precipitation is 20%.
7-day forecast for Harlingen
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 93°F | Slight Chance Showers And Thunderstorms | 7 mph W | 16% |
| Tonight | 68°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 6 to 10 mph NNE | 41% |
| Wednesday | 83°F | Mostly Sunny | 10 mph NNE | 6% |
| Wednesday Night | 69°F | Partly Cloudy | 2 to 9 mph ESE | 1% |
| Thursday | 90°F | Mostly Sunny | 5 to 10 mph SSE | 6% |
| Thursday Night | 71°F | Showers And Thunderstorms Likely | 3 to 9 mph SW | 71% |
| Friday | 81°F | Chance Showers And Thunderstorms | 7 to 13 mph N | 50% |
| Friday Night | 65°F | Partly Cloudy then Slight Chance Rain Showers | 5 to 9 mph N | 21% |
| Saturday | 79°F | Chance Rain Showers | 9 to 13 mph N | 49% |
| Saturday Night | 62°F | Chance Showers And Thunderstorms | 9 to 15 mph N | 38% |
| Sunday | 76°F | Chance Rain Showers | 12 to 15 mph N | 29% |
| Sunday Night | 58°F | Slight Chance Rain Showers then Partly Cloudy | 5 to 9 mph N | 18% |
| Monday | 77°F | Mostly Sunny | 9 mph NNE | 5% |
| Monday Night | 58°F | Partly Cloudy | 2 to 8 mph NE | 0% |
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
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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 Nov 3, 2026.