Harlingen, TX 78550 Weather

Cameron County5:01 PM CDT26.20°N, 97.69°W

Current conditions

Partly Cloudy
86°
Partly Cloudy
Feels like 86°
High 86°·Low 72°
WindNE 14 mph
Humidity67%
Dew point72°
Pressure30.03 inHg
Visibility10 mi
Cloud cover45%
UV index1 Low
Sunrise7:34 AM
Sunset6:58 PM

Observed at Harlingen, Rio Grande Valley International Airport · 1 hr ago

Forecast

10-day

  • This Afternoon

    A slight chance of rain showers before 4pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 86. North northeast wind around 9 mph. Chance of precipitation is 30%.

  • Tonight

    A chance of showers and thunderstorms before 7pm, then a slight chance of showers and thunderstorms between 7pm and 8pm. Partly cloudy, with a low around 72. East northeast wind 1 to 8 mph. Chance of precipitation is 30%.

  • Thursday

    A chance of rain showers between 11am and 3pm. Partly sunny, with a high near 84. Northeast wind 3 to 12 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.

National Weather Service forecast updated 1 hr ago.

Hourly

Hourly forecast
  1. Now Chance Showers And Thunderstorms 84°27%
  2. 6 PM Chance Showers And Thunderstorms 81°27%
  3. 7 PM Slight Chance Showers And Thunderstorms 80°16%
  4. 8 PM Partly Cloudy 78°11%
  5. 9 PM Partly Cloudy 77°13%
  6. 10 PM Partly Cloudy 76°12%
  7. 11 PM Mostly Cloudy 75°13%
  8. Thu12 AM Partly Cloudy 75°13%
  9. 1 AM Partly Cloudy 74°
  10. 2 AM Partly Cloudy 74°
  11. 3 AM Partly Cloudy 73°
  12. 4 AM Partly Cloudy 72°14%
  13. 5 AM Partly Cloudy 72°14%
  14. 6 AM Partly Sunny 72°11%
  15. 7 AM Partly Sunny 72°
  16. 8 AM Mostly Cloudy 72°
  17. 9 AM Mostly Sunny 74°
  18. 10 AM Mostly Sunny 78°14%
  19. 11 AM Slight Chance Rain Showers 80°20%
  20. 12 PM Chance Rain Showers 82°28%
  21. 1 PM Chance Rain Showers 82°27%
  22. 2 PM Slight Chance Rain Showers 83°17%
  23. 3 PM Partly Sunny 84°10%
  24. 4 PM Mostly Sunny 82°

10-day forecast

Details
  1. TodayOct 21 Chance Showers And Thunderstorms Chance Showers And Thunderstorms27%72°86°
  2. ThuOct 22 Chance Rain Showers Chance Rain Showers28%67°84°
  3. FriOct 23 Sunny Sunny70°86°
  4. SatOct 24 Mostly Sunny then Slight Chance Showers And Thunderstorms Mostly Sunny then Slight Chance Showers And Thunderstorms15%71°86°
  5. SunOct 25 Partly Sunny Partly Sunny69°85°
  6. MonOct 26 Mostly Sunny Mostly Sunny13%68°85°
  7. TueOct 27 Chance Showers And Thunderstorms Chance Showers And Thunderstorms33%68°84°
  8. WedOct 28 Mostly sunny Mostly sunny0.02 in69°85°
  9. ThuOct 29 Light showers Light showers0.03 in71°87°
  10. FriOct 30 Heavy rain Heavy rain0.40 in73°83°

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

51
Moderate
Fine particles (PM2.5)

Acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.

Forecast

  • WedGood
  • ThuGood
  • FriGood

Brownsville-McAllen, TX reporting area · 2 hrs ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.

Sun & moon

Sunrise 7:34 AM
Sunset 6:58 PM
Daylight 11 h 24 min (−1 min 26 s tomorrow)
Waxing Gibbous · 80% lit
Moonrise 4:11 PM Moonset 3:10 AM
Full moon Oct 26 New moon Nov 9

Almanac

Monthly
Normal high / low87° / 66°
Record high97° (1956)
Record low44° (1964)
Wettest1.89 in (2002)
Yesterday85° / 65°
Month to date4.70 in (normal 2.14 in)

Harlingen, records since 1912. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).

Nearby

Forecasters' discussion

From the National Weather Service office in BRO, issued 10 hrs ago

Key Messages

Updated at 632 AM CDT Wed Oct 21 2026

- Showers and thunderstorms over the Gulf moving inland will bring low to moderate (20-50%) rain chances primarily east of US-281 today, and across Deep South Texas into Thursday.

- Narrow beaches around high tide are possible today.

- Overall seasonable temperatures and pleasant weather expected this weekend.

- Rain chances return early next week as a mid-level trough approaches the area.

Discussion

Issued at 1045 PM CDT Tue Oct 20 2026

Rain chances increase through Wednesday morning as deep moisture interacts with coastal troughing offshore. Isolated showers over the Gulf waters will continue to move west-southwest, bringing isolated showers to the coast. As moisture encroaches westward, isolated to scattered showers and thunderstorms are expected to move inland late Wednesday morning through Wednesday afternoon. Shower coverage should diminish as it travels inland, with moderate PoPs (40-70%) focused east of US-281, highest along the coast. Isolated showers will continue working their way inland Wednesday night into Thursday. Rainfall amounts should generally be less than a half an inch, but isolated higher amounts to 2 inches are possible under heavier showers. Rain chances diminish Friday through the weekend bar afternoon sea breeze showers, before increasing again early next week ahead of an approaching trough.

High pressure over NE Mexico will return fair weather Friday into the weekend, with isolated sea breeze showers possible in the afternoons. Temperatures remain seasonable with highs in the upper 80s and lows in the 60s to low 70s.

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

Aviation

(12Z TAFS) Issued at 632 AM CDT Wed Oct 21 2026

Predominately VFR conditions are forecast to continue through the period, however isolated to scattered convection this afternoon could briefly produce MVFR ceilings and visibilities. Northerly winds are forecast to shift easterly to southeasterly through the day, before becoming light and variable again overnight.

Marine

Issued at 1045 PM CDT Tue Oct 20 2026

Lingering moderate seas will result in intermittent SCEC conditions on the Gulf today. There is a medium to high (40-80%) chance of rain Wednesday and Wednesday night as a coastal trough interacts with deep moisture. Thursday and Friday, conditions improve as seas decrease to slight. Gentle to fresh onshore winds will continue through the week. This weekend, conditions may deteriorate yet again ahead of an approaching trough.

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 4Conservative index and reflects what the press published. Terms of use.