Water Temperature of the Medina River in San Antonio, TX

Current Water Temperature

81.1°F

Measurement Time: Saturday, July 18, 2026, 4:45 AM CDT

Temperature Locations

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Local Points of Interest

Medina River Natural Area

Medina River

Station Name: Medina Rv nr Somerset, TX
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 528 feet

Nearest Address:
Palo Alto Rd
San Antonio, TX 78264
Bexar County

GPS Coordinates: 29.26218286, -98.5814074

Nearby Water Temperatures

Medina River, San Antonio, TX (5.5 mi)
San Antonio River, Elmendorf, TX (13.9 mi)
San Antonio River, Runge, TX (58.4 mi)
Jacob's Well Spring, Wimberley, TX (60 mi)
Frio River, Concan, TX (69.4 mi)
San Antonio River, Goliad, TX (83.8 mi)
Barton Springs, Austin, TX (84.5 mi)
Nueces River, San Patricio, TX (103.7 mi)
Nueces River, Odem, TX (110.7 mi)
Rincon Bayou Channel, Odem, TX (111 mi)
Viola Turning Basin, Corpus Christi, TX (117.1 mi)
Neuces Bay, Corpus Christi, TX (119.1 mi)
Corpus Christi Bay, Corpus Christi, TX (123.6 mi)
Corpus Christi Bay, Portland, TX (123.7 mi)
Aransas Bay, Rockport, TX (126.5 mi)

Weather for San Antonio, Texas

Current Weather

82.9°F
Partly cloudy
Partly cloudy
90.1°F
91.3°F
76%
SSE 12.5 mph
15.3 mph
83.5°F
75°F
0 in
50%
8 mi
1018 mbar
3.3

Five Day Weather Forecast

Sunny
Sat
H: 101°F
L: 76°F
Sunny
Sun
H: 98°F
L: 76°F
Sunny
Mon
H: 101°F
L: 72°F
Sunny
Tue
H: 101°F
L: 73°F
Sunny
Wed
H: 100°F
L: 75°F

Air Quality

AQI: 2 - Moderate
PM2.5: 13.9 μg/m3
PM10: 29.5 μg/m3
Carbon Monoxide: 93 μg/m3
Nitrogen Dioxide: 1.9 μg/m3
Sulphur Dioxide: 0.9 μg/m3
Ozone: 48 μg/m3

Astronomical

Sunrise: 6:47 AM
Sun Transit: 1:40 PM
Sunset: 8:34 PM
Daylight: 13 hrs 47 mins
Moonrise: 11:18 AM
Moon Transit: 5:30 PM
Moonset: 12:06 AM
Moon Phase: Waxing Crescent
Moon Illumination: 13.9%

Best Times for Fishing or Hunting

Major Periods

3:27 AM - 5:57 AM
5:00 PM - 7:30 PM

Minor Periods

10:48 AM - 12:18 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Flood Warning issued July 17 at 9:07PM CDT until July 18 at 8:23AM CDT by NWS Austin/San Antonio TX

Effective: Fri July 17, 2026, 9:07 PM
Expires: Sat July 18, 2026, 8:30 AM

...The Flood Warning continues for the following rivers in Texas... San Antonio River at Hwy 72 near Runge affecting Karnes and Goliad Counties. Cibolo Creek Near Falls City affecting Karnes County. Cibolo Creek at Sutherland Springs affecting Karnes and Wilson Counties. * WHAT...Minor flooding is occurring. * WHERE...Cibolo Creek at Sutherland Springs. * WHEN...Until tomorrow morning. * ADDITIONAL DETAILS... - At 8:15 PM CDT Friday the stage was 21.1 feet. - Bankfull stage is 17.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 8:15 PM CDT Friday was 33.1 feet. - Forecast...The river is expected to fall to 7.4 feet Wednesday evening. - Flood stage is 21.0 feet. - http://www.weather.gov/safety/flood

Caution is urged when walking near riverbanks. Be especially cautious at night when it is harder to recognize the dangers of flooding. Flooding is occurring or is imminent. Most flood related deaths occur in automobiles. Do not attempt to cross water covered bridges, dips, or low water crossings. Never try to cross a flowing stream, even a small one, on foot. To escape rising water find another route over higher ground. Additional information is available at www.weather.gov. The next statement will be issued Saturday morning by 830 AM CDT.


Flood Warning issued July 17 at 9:07PM CDT until July 19 at 8:07AM CDT by NWS Austin/San Antonio TX

Effective: Fri July 17, 2026, 9:07 PM
Expires: Sat July 18, 2026, 3:15 PM

...The Flood Warning continues for the following rivers in Texas... San Antonio River at Hwy 72 near Runge affecting Karnes and Goliad Counties. Cibolo Creek Near Falls City affecting Karnes County. Cibolo Creek at Sutherland Springs affecting Karnes and Wilson Counties. * WHAT...Moderate flooding is occurring and moderate flooding is forecast. * WHERE...Cibolo Creek near Falls City. * WHEN...Until Sunday morning. * IMPACTS...At 25.0 feet, Major lowland flooding of crop and pasturelands cut off many livestock and potentially drown them. Widespread flooding reaches secondary and primary roads, low bridges and crossings. Most of the Goliad State Park facilities downstream are under water. * ADDITIONAL DETAILS... - At 8:15 PM CDT Friday the stage was 23.3 feet. - Bankfull stage is 6.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 8:15 PM CDT Friday was 23.3 feet. - Forecast...The river is expected to rise to a crest of 23.5 feet late this evening. It will then fall below flood stage tomorrow evening. - Flood stage is 17.0 feet. - http://www.weather.gov/safety/flood

Caution is urged when walking near riverbanks. Be especially cautious at night when it is harder to recognize the dangers of flooding. Flooding is occurring or is imminent. Most flood related deaths occur in automobiles. Do not attempt to cross water covered bridges, dips, or low water crossings. Never try to cross a flowing stream, even a small one, on foot. To escape rising water find another route over higher ground. Additional information is available at www.weather.gov. The next statement will be issued Saturday morning by 830 AM CDT.


Flood Warning issued July 18 at 2:52AM CDT until July 19 at 8:30AM CDT by NWS Austin/San Antonio TX

Effective: Sat July 18, 2026, 2:52 AM
Expires: Sat July 18, 2026, 9:00 PM

...The Flood Warning is extended for the following rivers in Texas... Cibolo Creek Near Falls City affecting Karnes County. * WHAT...Moderate flooding is occurring and moderate flooding is forecast. * WHERE...Cibolo Creek near Falls City. * WHEN...Until tomorrow morning. * IMPACTS...At 25.0 feet, Major lowland flooding of crop and pasturelands cut off many livestock and potentially drown them. Widespread flooding reaches secondary and primary roads, low bridges and crossings. Most of the Goliad State Park facilities downstream are under water. * ADDITIONAL DETAILS... - At 2:15 AM CDT Saturday the stage was 23.1 feet. - Bankfull stage is 6.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 2:15 AM CDT Saturday was 23.5 feet. - Forecast...The river is expected to fall below flood stage this evening and continue falling to 1.9 feet early Thursday morning. - Flood stage is 17.0 feet. - Flood History...This crest compares to a previous crest of 23.1 feet on 06/17/1981. - http://www.weather.gov/safety/flood

Be especially cautious at night when it is harder to recognize the dangers of flooding. Flooding is occurring or is imminent. Most flood related deaths occur in automobiles. Do not attempt to cross water covered bridges, dips, or low water crossings. Never try to cross a flowing stream, even a small one, on foot. To escape rising water find another route over higher ground. Caution is urged when walking near riverbanks. Additional information is available at www.weather.gov. The next statement will be issued this evening by 900 PM CDT.


Saturday, July 18, 2026

Weather Forecast

Sunny
100.6°F
76.1°F
86.6°F
66%
0 in
5%
0%
19.7 mph
9


Air Quality

AQI: 1 - Good
PM2.5: 14.83 μg/m3
PM10: 30.28 μg/m3
Carbon Monoxide: 95.42 μg/m3
Nitrogen Dioxide: 2.5 μg/m3
Sulphur Dioxide: 0.87 μg/m3
Ozone: 51.96 μg/m3

Astronomical

Sunrise: 6:47 AM
Sun Transit: 1:40 PM
Sunset: 8:34 PM
Daylight: 13 hrs 47 mins
Moonrise: 11:18 AM
Moon Transit: 5:30 PM
Moonset: 12:06 AM
Moon Phase: Waxing Crescent
Moon Illumination: 13.9%

Best Times for Fishing or Hunting

Major Periods

3:27 AM - 5:57 AM
5:00 PM - 7:30 PM

Minor Periods

10:48 AM - 12:18 AM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Sunday, July 19, 2026

Weather Forecast

Sunny
98.3°F
75.8°F
85.7°F
58%
0 in
3%
0%
17.9 mph
10.5


Air Quality

AQI: 1 - Good
PM2.5: 11.66 μg/m3
PM10: 20.94 μg/m3
Carbon Monoxide: 96.63 μg/m3
Nitrogen Dioxide: 2.52 μg/m3
Sulphur Dioxide: 0.94 μg/m3
Ozone: 55.42 μg/m3

Astronomical

Sunrise: 6:48 AM
Sun Transit: 1:40 PM
Sunset: 8:34 PM
Daylight: 13 hrs 46 mins
Moonrise: 12:17 AM
Moon Transit: 6:14 PM
Moonset: 12:36 AM
Moon Phase: Waxing Crescent
Moon Illumination: 22.6%

Best Times for Fishing or Hunting

Major Periods

4:11 AM - 6:41 AM
5:44 PM - 8:14 PM

Minor Periods

11:47 AM - 1:17 PM
12:00 AM - 12:00 AM

Action Rating: 4 out of 5

Monday, July 20, 2026

Weather Forecast

Sunny
100.6°F
72°F
85.9°F
51%
0 in
2%
0%
17 mph
11.4


Air Quality

AQI: 2 - Moderate
PM2.5: 16.28 μg/m3
PM10: 25.42 μg/m3
Carbon Monoxide: 99.25 μg/m3
Nitrogen Dioxide: 3.6 μg/m3
Sulphur Dioxide: 1.06 μg/m3
Ozone: 51.54 μg/m3

Astronomical

Sunrise: 6:48 AM
Sun Transit: 1:40 PM
Sunset: 8:34 PM
Daylight: 13 hrs 45 mins
Moonrise: 1:14 PM
Moon Transit: 6:57 PM
Moonset: 12:05 AM
Moon Phase: Waxing Crescent
Moon Illumination: 32.7%

Best Times for Fishing or Hunting

Major Periods

4:55 AM - 7:25 AM
6:27 PM - 8:57 PM

Minor Periods

12:44 AM - 2:14 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Tuesday, July 21, 2026

Weather Forecast

Sunny
100.9°F
72.9°F
86.2°F
53%
0 in
2%
0%
16.3 mph
11.7


Air Quality

AQI: 2 - Moderate
PM2.5: 17.29 μg/m3
PM10: 25.37 μg/m3
Carbon Monoxide: 104.68 μg/m3
Nitrogen Dioxide: 4.68 μg/m3
Sulphur Dioxide: 1.19 μg/m3
Ozone: 52.71 μg/m3

Astronomical

Sunrise: 6:49 AM
Sun Transit: 1:40 PM
Sunset: 8:33 PM
Daylight: 13 hrs 44 mins
Moonrise: 2:12 PM
Moon Transit: 7:41 PM
Moonset: 12:35 AM
Moon Phase: First Quarter
Moon Illumination: 43.7%

Best Times for Fishing or Hunting

Major Periods

5:38 AM - 8:08 AM
7:11 PM - 9:41 PM

Minor Periods

1:42 PM - 3:12 PM
12:05 AM - 1:35 AM

Action Rating: 2 out of 5

Wednesday, July 22, 2026

Weather Forecast

Sunny
99.9°F
74.5°F
86.5°F
55%
0 in
2%
0%
16.8 mph
9


Air Quality

AQI: 2 - Moderate
PM2.5: 18.78 μg/m3
PM10: 25.2 μg/m3
Carbon Monoxide: 130.5 μg/m3
Nitrogen Dioxide: 8.16 μg/m3
Sulphur Dioxide: 1.06 μg/m3
Ozone: 26.38 μg/m3

Astronomical

Sunrise: 6:49 AM
Sun Transit: 1:40 PM
Sunset: 8:33 PM
Daylight: 13 hrs 43 mins
Moonrise: 3:09 PM
Moon Transit: 8:27 PM
Moonset: 1:07 AM
Moon Phase: First Quarter
Moon Illumination: 55.0%

Best Times for Fishing or Hunting

Major Periods

6:23 AM - 8:53 AM
7:57 PM - 10:27 PM

Minor Periods

2:39 PM - 4:09 PM
12:37 AM - 2:07 AM

Action Rating: 3 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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