Water Temperature of the Rio Grande in Mercedes, TX

Current Water Temperature

79.0°F 26.1°C
Comfortable Ideal for Swimming
79.0°F
Frigid < 50°F
Cold 50°–60°
Cool 60°–70°
Comfortable 70°–80°
Warm 80°+

Pleasant and refreshing. Ideal for recreational swimming, triathlons, and active water recreation without thermal gear.

Measurement Time: Sunday, November 8, 2026, 6:00 AM CST

Temperature Locations

View Nearby Locations     View All Texas Locations     View Locations Near Me

Local Points of Interest

Mercedes Settling Basin; Matamoros Municipality, Mexico

Sponsored Content

Rio Grande

Station Name: Rio Grande nr Mercedes, TX
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 76 feet

Nearest Address:
Mercedes, TX 78570
Hidalgo County

GPS Coordinates: 26.0615722, -97.8999833

Nearby Water Temperatures

Rio Grande, Los Indios, TX (8.5 mi)
Rio Grande, Mission, TX (27.5 mi)
Rio Grande, Mission, TX (29.8 mi)
Rio Grande, Mission, TX (32.5 mi)
Laguna Madre, Bayview, TX (40.6 mi)
Port Isabel Channel, Port Isabel, TX (42.5 mi)
Laguna Madre, South Padre Island, TX (45.5 mi)
Brownsville Ship Channel, South Padre Island, TX (46.3 mi)
Laguna Madre, Armstrong, TX (57.6 mi)
Rio Grande, Rio Grande City, TX (59.2 mi)
Rio Grande, Roma, TX (73.1 mi)
Baffin Bay, Kingsville, TX (90.7 mi)
Gulf Intracoastal Waterway, Corpus Christi, TX (104.6 mi)
Packery Channel, Corpus Christi, TX (116.1 mi)
Corpus Christi Bay, Corpus Christi, TX (124.9 mi)

Weather for Mercedes, Texas

Current Weather

77.3°F
Light rain shower
Conditions: Light rain shower
Humidity: 77%
Feels Like: 79.3°F
Wind: SE 9.6 mph
Wind Gusts: 17.1 mph
Pressure: 30.02 in
Precipitation: 0.07 in
Cloud Cover: 92%
Visibility: 6 mi
UV Index: 4.3

Weather Forecast

Light rain shower
Sun
H: 81°F
L: 72°F
Overcast
Mon
H: 76°F
L: 70°F
Overcast
Tue
H: 81°F
L: 68°F

Air Quality

EPA Index 1 • Good

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

PM2.5
5.1 μg/m³
Good
PM10
6.9 μg/m³
Good
Ozone (O3)
84 μg/m³
Photochemical
NO2
1.7 μg/m³
Nitrogen Dioxide
SO2
1 μg/m³
Sulfur Dioxide
CO
126 μg/m³
Carbon Monoxide

Astronomical

Sun
11h 0m daylight
Sunrise 6:45 AM
Solar Noon 12:15 PM
Sunset 5:45 PM
Moon
New • 0%
Moonrise 6:11 AM
Transit 11:43 AM
Moonset 5:12 PM

Best Times for Fishing or Hunting

Major Periods

11:13 AM - 1:43 PM
11:38 PM - 2:08 AM

Minor Periods

5:41 AM - 7:11 AM
4:42 PM - 6:12 PM
Action Rating:
Peak Action 5/5

Sistema frontal núm. 4 y canal de baja presión.

Effective: Sun November 8, 2026, 9:35 AM
Expires: Mon November 9, 2026, 6:00 AM

Se prevén lluvias puntuales intensas (75 a 150 mm), descargas eléctricas y rachas de viento.

Extremar precauciones a la población en general en las zonas de los estados mencionados y atender las recomendaciones emitidas por las autoridades del Sistema Nacional de Protección Civil, en cada entidad.
Sunday, November 8, 2026

Weather Forecast

Conditions: Light rain shower
Average Temperature: 76.2°F
Average Humidity: 76%
Chance of Rain: 83%
Wind: 15.7 mph
UV Index: 4.3

Astronomical

Sun
11h 0m daylight
Sunrise 6:45 AM
Solar Noon 12:15 PM
Sunset 5:45 PM
Moon
New • 0%
Moonrise 6:11 AM
Transit 11:43 AM
Moonset 5:12 PM

Best Times for Fishing or Hunting

Major Periods

11:13 AM - 1:43 PM
11:38 PM - 2:08 AM

Minor Periods

5:41 AM - 7:11 AM
4:42 PM - 6:12 PM
Action Rating:
Peak Action 5/5
Monday, November 9, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 72.5°F
Average Humidity: 85%
Chance of Rain: 90%
Wind: 13.2 mph
UV Index: 3.2

Astronomical

Sun
10h 59m daylight
Sunrise 6:46 AM
Solar Noon 12:15 PM
Sunset 5:45 PM
Moon
New • 2%
Moonrise 7:09 AM
Transit 12:31 PM
Moonset 5:51 PM

Best Times for Fishing or Hunting

Major Periods

12:01 PM - 2:31 PM
11:37 PM - 2:07 AM

Minor Periods

6:39 AM - 8:09 AM
5:21 PM - 6:51 PM
Action Rating:
Peak Action 5/5
Tuesday, November 10, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 74.1°F
Average Humidity: 77%
Chance of Rain: 23%
Wind: 7.4 mph
UV Index: 5.4

Astronomical

Sun
10h 57m daylight
Sunrise 6:47 AM
Solar Noon 12:15 PM
Sunset 5:44 PM
Moon
New • 0%
Moonrise 8:06 AM
Transit 1:22 PM
Moonset 6:36 PM

Best Times for Fishing or Hunting

Major Periods

12:26 AM - 2:56 AM
12:52 PM - 3:22 PM

Minor Periods

7:36 AM - 9:06 AM
6:06 PM - 7:36 PM
Action Rating:
Very Good 4/5
The times presented here are based upon the solunar theory, which is the idea that the movements of fish and other animals are affected by the location of the sun and moon. The major periods are believed to be the times of the greatest animal activity and occur when the moon is directly overhead or underfoot (lunar transits). The minor periods also see increased activity and occur when the moon is rising or setting. The strongest activity occurs during full or new moons, and the weakest during quarter or three quarter moons. This is indicated by the Action Rating.

Webcams Near Mercedes, TX

Sponsored Content