Weather forecast for 10 daysHarlingen, TX

Weather forecast for the weekend

Saturday Oct 17, 2026

  • 73°F
  • 57°F
Sunny / Wind
Sunny / Wind
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 23mphN 353°
  • Humidity: 39%
  • UV index: 8
  • Sunrise: 7:31 am CDT
  • Sunset: 7:01 pm CDT
  • ▼
Today, in Harlingen, dry air and sunshine will combine with winds across the area.
The highest temperature will be a warm 73.4°F, while the lowest predicted temperature is a mild 57.2°F.
Today, the anticipated high temperature is lower and fits better with November's average than with October's usual.
Sunrise was at 7:31 am and sunset will be at 7:01 pm; the daylight will last for 11h and 30min.

Sunday Oct 18, 2026

  • 79°F
  • 63°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 12mphN 354°
  • Humidity: 51%
  • UV index: 6
  • Sunrise: 7:31 am CDT
  • Sunset: 7:00 pm CDT
  • ▼
Tomorrow, on Sunday, October 18, the sky will remain mostly closed off by clouds.
Temperatures are expected to range from a maximum of a warm 78.8°F to a minimum of an enjoyable 62.6°F.
It will be colder, as the maximum temperature reflects November's norm of 76.5°F instead of October's.
Sunrise will be at 7:31 am and sunset at 7:00 pm; tomorrow's daylight will last for 11h and 29min.

10-day overview

Daily temperatures

Warmest period: Saturday - Monday 90°C.
Coldest day: today 73°C.

Chance of precipitation

Highest chance: Wednesday 38%.

Long-term weather forecast

  • Saturday
  • Oct 17, 2026
  • 73°F
  • 57°F
Sunny / Wind
Sunny / Wind
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 23mphN 353°
  • Humidity: 39%
  • UV index: 8
  • Sunrise: 7:31 am CDT
  • Sunset: 7:01 pm CDT
  • ▼
  • Sunday
  • Oct 18, 2026
  • 79°F
  • 63°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 12mphN 354°
  • Humidity: 51%
  • UV index: 6
  • Sunrise: 7:31 am CDT
  • Sunset: 7:00 pm CDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 82°F
  • 66°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 12mphNNE 17°
  • Humidity: 68%
  • UV index: 5
  • Sunrise: 7:32 am CDT
  • Sunset: 6:59 pm CDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 84°F
  • 68°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 17%
  • Precipitation: 0.04"
  • Wind: 14mphNE 34°
  • Humidity: 71%
  • UV index: 7
  • Sunrise: 7:32 am CDT
  • Sunset: 6:58 pm CDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 86°F
  • 64°F
Showers
Showers
  • Precip. probability: 38%
  • Precipitation: 0.08"
  • Wind: 14mphNE 54°
  • Humidity: 72%
  • UV index: 7
  • Sunrise: 7:33 am CDT
  • Sunset: 6:57 pm CDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 88°F
  • 63°F
Sunny
Sunny
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 13mphNE 53°
  • Humidity: 64%
  • UV index: 8
  • Sunrise: 7:33 am CDT
  • Sunset: 6:56 pm CDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 88°F
  • 66°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 14mphE 100°
  • Humidity: 61%
  • UV index: 8
  • Sunrise: 7:34 am CDT
  • Sunset: 6:55 pm CDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 90°F
  • 70°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 16mphESE 123°
  • Humidity: 60%
  • UV index: 7
  • Sunrise: 7:34 am CDT
  • Sunset: 6:54 pm CDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 90°F
  • 70°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 15%
  • Precipitation: 0"
  • Wind: 15mphESE 112°
  • Humidity: 60%
  • UV index: 6
  • Sunrise: 7:35 am CDT
  • Sunset: 6:54 pm CDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 90°F
  • 70°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0.12"
  • Wind: 14mphESE 109°
  • Humidity: 63%
  • UV index: 7
  • Sunrise: 7:36 am CDT
  • Sunset: 6:53 pm CDT
  • ▼
Looking ahead, conditions suggest a period of gloomy, mostly clear and wet weather is expected.
Rainfall is predicted for Tuesday, Wednesday and next Monday.
Expect a substantial fluctuation in daytime highs in the coming days. Highs will range from 73.4°F to 89.6°F, while the fluctuation in night temperatures will be also significant, as the minimum temperature is expected to range between 57.2°F and 69.8°F.
The hottest days will be next Saturday through next Monday, with a maximum of 89.6°F; today is the coldest day, with a maximum temperature of 73.4°F.
Combining with the humidity, the maximum feel-like temperature may increase considerably and vary between 73.4°F and a fiery hot 100.4°F.
Updated: Oct 17, 2026 @ 14:34:22 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Today, in Harlingen, wind gusts may pick up while sunny weather holds steady.

Today, the maximum temperature will be 73.4°F, while the minimum temperature will be 57.2°F.
The highest temperature today will be uncommonly lower than the average maximum of 85.1°F in October. Today, the lowest temperature will be also noticeably lower than the average low of 71.8°F.

On Saturday, in Harlingen, sunrise was at 7:31 am and sunset will be at 7:01 pm (CDT).

In Harlingen, Texas, today, there will be 11h and 30min of daylight.

Tomorrow, intermittent cloud layers may allow brief light, but overall it stays overcast.

Tomorrow, the highest temperature will be 78.8°F, while the lowest temperature will be 62.6°F.
Tomorrow, the highest temperature will be a few degrees lower than the average maximum temperature in October. Tomorrow, the lowest temperature will be notably lower than the average low of 71.8°F.

On Sunday, in Harlingen, sunrise will be at 7:31 am and sunset at 7:00 pm (CDT).

Tomorrow, the daylight will last for 11h and 29min.