Harlingen, TX 78551 Weather

Cameron County4:40 PM CDT26.24°N, 97.72°W

Current conditions

Sunny
85°
Sunny
Feels like 85°
High 88°·Low 69°
WindNE 13 mph gusts 22 mph
Humidity47%
Dew point62°
Cloud cover21%
UV index3 Moderate
Sunrise7:33 AM
Sunset6:59 PM

Forecast for this hour (no station report in the last two hours)

Forecast

10-day

  • Today

    Sunny, with a high near 88. Northeast wind around 13 mph, with gusts as high as 22 mph.

  • Tonight

    Mostly clear, with a low around 69. North wind 5 to 13 mph, with gusts as high as 22 mph.

  • Wednesday

    A chance of showers and thunderstorms after 1pm. Mostly sunny. High near 87, with temperatures falling to around 83 in the afternoon. North wind 7 to 10 mph. Chance of precipitation is 40%.

National Weather Service forecast updated 4 hrs ago.

Hourly

Hourly forecast
  1. Now Sunny 85°
  2. 5 PM Sunny 86°
  3. 6 PM Mostly Clear 82°
  4. 7 PM Mostly Clear 81°
  5. 8 PM Mostly Clear 79°
  6. 9 PM Clear 76°
  7. 10 PM Clear 75°
  8. 11 PM Mostly Clear 74°
  9. Wed12 AM Mostly Clear 73°
  10. 1 AM Mostly Clear 72°
  11. 2 AM Mostly Clear 72°
  12. 3 AM Mostly Clear 71°
  13. 4 AM Mostly Clear 70°
  14. 5 AM Partly Cloudy 70°
  15. 6 AM Mostly Sunny 69°
  16. 7 AM Mostly Sunny 69°
  17. 8 AM Sunny 69°
  18. 9 AM Sunny 72°
  19. 10 AM Sunny 76°
  20. 11 AM Sunny 79°12%
  21. 12 PM Sunny 81°12%
  22. 1 PM Chance Showers And Thunderstorms 84°36%
  23. 2 PM Chance Showers And Thunderstorms 84°37%
  24. 3 PM Chance Showers And Thunderstorms 84°36%

10-day forecast

Details
  1. TodayOct 20 Sunny Sunny69°88°
  2. WedOct 21 Mostly Sunny then Chance Showers And Thunderstorms Mostly Sunny then Chance Showers And Thunderstorms38%71°87°
  3. ThuOct 22 Slight Chance Rain Showers then Mostly Sunny Slight Chance Rain Showers then Mostly Sunny15%65°86°
  4. FriOct 23 Sunny Sunny67°87°
  5. SatOct 24 Sunny Sunny70°88°
  6. SunOct 25 Partly Sunny Partly Sunny11%70°87°
  7. MonOct 26 Chance Rain Showers Chance Rain Showers40%68°85°
  8. TueOct 27 Heavy rain Heavy rain0.91 in72°74°
  9. WedOct 28 Heavy rain Heavy rain2.19 in65°75°
  10. ThuOct 29 Cloudy Cloudy0.23 in63°79°

Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.

Radar

Full map
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Air quality

42
Good
Ozone

Air quality is satisfactory, and air pollution poses little or no risk.

Forecast

  • TueGood
  • WedGood
  • ThuGood

Brownsville-McAllen, TX reporting area · 1 hr ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.

Sun & moon

Sunrise 7:33 AM
Sunset 6:59 PM
Daylight 11 h 26 min (−1 min 26 s tomorrow)
Waxing Gibbous · 71% lit
Moonrise 3:40 PM Moonset 2:14 AM
Full moon Oct 26 New moon Nov 9

Nearby

Forecasters' discussion

From the National Weather Service office in BRO, issued 9 hrs ago

Key Messages

Updated at 634 AM CDT Tue Oct 20 2026

- Overall seasonable temperatures and pleasant weather expected.

- Narrow beaches around high tide are expected through Wednesday.

- Showers and thunderstorms are possible Wednesday east of US-281.

Discussion

Issued at 1045 PM CDT Mon Oct 19 2026

Ridging over NE Mexico will slowly shift east towards the Gulf, keeping mostly fair weather for much of the period. High temperatures climb to the upper 80s-low 90s by Wednesday, with a Minor (level 1 of 4) risk of heat related illness into the weekend.

Mostly dry conditions should prevail through this afternoon. A plume of moisture associated with a developing coastal trough will bring deeper moisture westward beginning tonight. Rain chances increase along the coast overnight, spreading westward through Wednesday. Chances for showers and thunderstorms peak Wednesday afternoon, with moderate PoPs (40-60%) east of US-281, highest near the coast. Drier conditions are expected Thursday through Sunday as high pressure dominates. Low rain chances return early next week.

Long-period swell and northeast winds will keep local beaches narrow. Minor coastal flooding is possible near high through the middle of the week. Current guidance keeps water levels below minor flooding threshold, but conditions will continue to be monitored.

Aviation

(12Z TAFS) Issued at 634 AM CDT Tue Oct 20 2026

VFR conditions are forecast to continue through the period. Generally light to moderate northeasterly winds are forecast through the afternoon, with winds becoming light and variable this evening.

Marine

Issued at 1045 PM CDT Mon Oct 19 2026

Adverse conditions are expected through midweek due to moderate seas and northeast to onshore winds, resulting in intermittent SCEC conditions across the Laguna Madre and Gulf waters. Rain chances increase Tuesday night into Wednesday as a coastal trough brings additional moisture to the reaching, with PoPs reaching 70-80% over the Gulf waters Wednesday. Thursday and Friday, conditions improve as seas decrease to slight and winds decrease to a gentle breeze.

Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Search index and reflects what the press published. Terms of use.