Water Temperature of the San Antonio River in Elmendorf, TX

Current Water Temperature

74.5°F

Measurement Time: Friday, February 20, 2026, 3:30 PM CST

Temperature Locations

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Local Points of Interest

River Crossing Park; Graytown, TX

San Antonio River

Station Name: San Antonio Rv nr Elmendorf, TX
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 423 feet

Nearest Address:
6900 State Loop 1604
Elmendorf, TX 78112
Bexar County

GPS Coordinates: 29.2221853, -98.3558463

Nearby Water Temperatures

Medina River, San Antonio, TX (8.6 mi)
Medina River, San Antonio, TX (13.9 mi)
San Antonio River, Runge, TX (45.4 mi)
Jacob's Well Spring, Wimberley, TX (57.8 mi)
San Antonio River, Goliad, TX (70.8 mi)
Barton Springs, Austin, TX (80 mi)
Frio River, Concan, TX (83.3 mi)
Nueces River, San Patricio, TX (95.5 mi)
Nueces River, Odem, TX (101.7 mi)
Rincon Bayou Channel, Odem, TX (101.9 mi)
Viola Turning Basin, Corpus Christi, TX (107.7 mi)
Neuces Bay, Corpus Christi, TX (109.6 mi)
Lavaca Bay, Port Lavaca, TX (113 mi)
Corpus Christi Bay, Portland, TX (113.2 mi)
Corpus Christi Bay, Corpus Christi, TX (113.7 mi)

Weather for Elmendorf, Texas

Current Weather

66°F
Clear
Clear
66°F
64.8°F
50%
NE 6.9 mph
14.6 mph
64.6°F
47.7°F
0 in
0%
9 mi
1008 mbar
0

Five Day Weather Forecast

Patchy rain nearby
Fri
H: 77°F
L: 63°F
Patchy rain nearby
Sat
H: 79°F
L: 58°F
Sunny
Sun
H: 70°F
L: 43°F
Sunny
Mon
H: 74°F
L: 37°F
Sunny
Tue
H: 75°F
L: 44°F

Air Quality

AQI: 1 - Good
PM2.5: 17.85 μg/m3
PM10: 19.45 μg/m3
Carbon Monoxide: 165.85 μg/m3
Nitrogen Dioxide: 3.25 μg/m3
Sulphur Dioxide: 0.95 μg/m3
Ozone: 50 μg/m3

Astronomical

Sunrise: 7:08 AM
Sun Transit: 12:47 AM
Sunset: 6:27 PM
Daylight: 11 hrs 20 mins
Moonrise: 8:52 AM
Moon Transit: 3:19 PM
Moonset: 9:55 PM
Moon Phase: Waxing Crescent
Moon Illumination: 11.3%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:49 PM - 5:19 PM

Minor Periods

9:25 PM - 10:55 PM
8:22 AM - 9:52 AM

Action Rating: 2 out of 5

Red Flag Warning issued February 20 at 12:23PM CST until February 21 at 9:00PM CST by NWS Austin/San Antonio TX

Effective: Fri February 20, 2026, 12:23 PM
Expires: Sat February 21, 2026, 3:00 AM

...CRITICAL FIRE WEATHER CONDITIONS EXPECTED SATURDAY... .Breezy north winds and dry air behind a Pacific front will bring critical fire weather conditions during Saturday across much of South Central Texas. The National Weather Service in Austin/San Antonio has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 10 AM to 9 PM CST Saturday. * AFFECTED AREA...Most of South Central Texas. * TIMING...From 10 AM to 9 PM CST Saturday. * WINDS...North 10 to 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 10 percent. * IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended.

A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior.


Friday, February 20, 2026

Weather Forecast

Patchy rain nearby
77°F
62.6°F
68.3°F
77%
0.01 in
86%
0%
13 mph
0.4


Air Quality

AQI: 2 - Moderate
PM2.5: 17.45 μg/m3
PM10: 18.79 μg/m3
Carbon Monoxide: 178.01 μg/m3
Nitrogen Dioxide: 4.12 μg/m3
Sulphur Dioxide: 1.07 μg/m3
Ozone: 72.2 μg/m3

Astronomical

Sunrise: 7:08 AM
Sun Transit: 12:47 AM
Sunset: 6:27 PM
Daylight: 11 hrs 20 mins
Moonrise: 8:52 AM
Moon Transit: 3:19 PM
Moonset: 9:55 PM
Moon Phase: Waxing Crescent
Moon Illumination: 11.3%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:49 PM - 5:19 PM

Minor Periods

9:25 PM - 10:55 PM
8:22 AM - 9:52 AM

Action Rating: 2 out of 5

Saturday, February 21, 2026

Weather Forecast

Patchy rain nearby
78.8°F
58.3°F
66.6°F
55%
0 in
0%
0%
19.2 mph
1.1


Air Quality

AQI: 1 - Good
PM2.5: 12.61 μg/m3
PM10: 15.02 μg/m3
Carbon Monoxide: 166.81 μg/m3
Nitrogen Dioxide: 4.17 μg/m3
Sulphur Dioxide: 1.48 μg/m3
Ozone: 72.48 μg/m3

Astronomical

Sunrise: 7:07 AM
Sun Transit: 12:46 AM
Sunset: 6:28 PM
Daylight: 11 hrs 21 mins
Moonrise: 9:25 AM
Moon Transit: 4:08 PM
Moonset: 11:01 PM
Moon Phase: Waxing Crescent
Moon Illumination: 19.4%

Best Times for Fishing or Hunting

Major Periods

2:04 AM - 4:34 AM
3:38 PM - 6:08 PM

Minor Periods

12:00 AM - 12:00 AM
8:55 AM - 10:25 AM

Action Rating: 3 out of 5

Sunday, February 22, 2026

Weather Forecast

Sunny
69.6°F
42.6°F
55.2°F
36%
0 in
0%
0%
18.6 mph
1.4


Air Quality

AQI: 1 - Good
PM2.5: 4.85 μg/m3
PM10: 5.16 μg/m3
Carbon Monoxide: 175.49 μg/m3
Nitrogen Dioxide: 4.65 μg/m3
Sulphur Dioxide: 3.19 μg/m3
Ozone: 87.84 μg/m3

Astronomical

Sunrise: 7:06 AM
Sun Transit: 12:46 AM
Sunset: 6:29 PM
Daylight: 11 hrs 23 mins
Moonrise: 10:02 AM
Moon Transit: 5:01 PM
Moonset: 12:01 AM
Moon Phase: Waxing Crescent
Moon Illumination: 29.1%

Best Times for Fishing or Hunting

Major Periods

2:55 AM - 5:25 AM
4:31 PM - 7:01 PM

Minor Periods

9:32 AM - 11:02 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Monday, February 23, 2026

Weather Forecast

Sunny
73.6°F
37.2°F
54.6°F
37%
0 in
0%
0%
11.2 mph
1.4


Air Quality

AQI: 1 - Good
PM2.5: 5.6 μg/m3
PM10: 5.98 μg/m3
Carbon Monoxide: 172.2 μg/m3
Nitrogen Dioxide: 5.17 μg/m3
Sulphur Dioxide: 3.51 μg/m3
Ozone: 79.36 μg/m3

Astronomical

Sunrise: 7:05 AM
Sun Transit: 12:46 AM
Sunset: 6:29 PM
Daylight: 11 hrs 25 mins
Moonrise: 10:45 AM
Moon Transit: 5:57 PM
Moonset: 12:09 AM
Moon Phase: First Quarter
Moon Illumination: 39.8%

Best Times for Fishing or Hunting

Major Periods

3:49 AM - 6:19 AM
5:27 PM - 7:57 PM

Minor Periods

10:15 AM - 11:45 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Tuesday, February 24, 2026

Weather Forecast

Sunny
74.7°F
44.1°F
58°F
61%
0 in
0%
0%
19.2 mph
1.2


Air Quality

AQI: 1 - Good
PM2.5: 7.78 μg/m3
PM10: 8.5 μg/m3
Carbon Monoxide: 184.8 μg/m3
Nitrogen Dioxide: 5.04 μg/m3
Sulphur Dioxide: 3.34 μg/m3
Ozone: 77.85 μg/m3

Astronomical

Sunrise: 7:04 AM
Sun Transit: 12:46 AM
Sunset: 6:30 PM
Daylight: 11 hrs 26 mins
Moonrise: 11:34 AM
Moon Transit: 6:58 PM
Moonset: 1:17 AM
Moon Phase: First Quarter
Moon Illumination: 51.1%

Best Times for Fishing or Hunting

Major Periods

4:48 AM - 7:18 AM
6:28 PM - 8:58 PM

Minor Periods

11:04 AM - 12:34 AM
12:47 AM - 2:17 AM

Action Rating: 4 out of 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.

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