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Weather for 78550 — Harlingen, TX

Conditions and forecast for the exact centre of ZIP code 78550 (26.195, -97.689), not a nearby airport.

73°

Clear sky

Feels like:
73°
Humidity:
82%
Wind:
7 mph
Dew point:
68°

Source updated: 11:52:58 AM · WeatherSignal checked: 11:52:58 AM

Source: Open-Meteo (national weather-service models)

Next 12 hours in 78550

12 PM

74°

0%

1 PM

74°

0%

2 PM

77°

0%

3 PM

82°

0%

4 PM

80°

0%

5 PM

82°

0%

6 PM

84°

0%

7 PM

81°

0%

8 PM

83°

0%

9 PM

83°

0%

10 PM

82°

0%

11 PM

81°

0%

7 day forecast for 78550

  • Today

    84° / 73°

    0% rain · 19 mph wind

  • Saturday, Oct 17

    78° / 60°

    0% rain · 19 mph wind

  • Sunday, Oct 18

    74° / 61°

    0% rain · 13 mph wind

  • Monday, Oct 19

    80° / 67°

    0% rain · 9 mph wind

  • Tuesday, Oct 20

    83° / 70°

    0% rain · 8 mph wind

  • Wednesday, Oct 21

    84° / 73°

    0% rain · 9 mph wind

  • Thursday, Oct 22

    83° / 67°

    0% rain · 9 mph wind

About ZIP code 78550

78550 covers Harlingen in Texas. Forecasts on this page are generated for the coordinates at the centre of the ZIP code, so small differences from a nearby city forecast are expected and usually correct.

Closest cities with full forecast pages: Brownsville (23 mi), McAllen (33 mi), Corpus Christi (112 mi), Laredo (144 mi).

Nearby ZIP codes

Severe weather warnings are issued by the National Weather Service for counties and polygons that may not line up with ZIP code boundaries. Always follow official warnings for your exact address.

Planning your week in Harlingen 78550, Texas

  • The warmest afternoon ahead is Wednesday, reaching about 84°F.
  • The coldest night ahead dips to about 60°F.
  • This is a dry stretch — most days show rain chances under 20%, good for outdoor plans.
  • The breeziest day looks like today, with sustained wind near 19 mph.
  • UV reaches 8 on the sunniest day — sunscreen is worth it if you will be outside around midday.

Common questions about Harlingen 78550, Texas weather

How accurate is the Harlingen 78550, Texas forecast?
The next 48 hours are usually reliable on temperature and sky cover, with timing that can shift by an hour or two. Days three and four are dependable for the overall pattern. Beyond that, treat the numbers as a planning direction rather than a promise — we label confidence on every day so you can judge for yourself.
What is the best day this week in Harlingen 78550, Texas?
No day in the current outlook has a rain chance above 40%, so conditions look favorable for outdoor plans across the week.
Where does this forecast come from?
Forecast values come from national weather model data, and official warnings come from the National Weather Service. We show the source and the last-updated time on every page, and we never invent a number the source did not publish — missing measurements are hidden, not guessed.
How often is this page updated?
The forecast refreshes whenever the source model publishes new data, typically several times a day. The freshness note near the top of the page shows exactly when the numbers you are looking at were issued.

More weather for Harlingen 78550, Texas

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