Water Temperature of the Medina River in San Antonio, TX
Current Water Temperature
Measurement Time: Monday, April 20, 2026, 5:45 PM CDT
Temperature Locations
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Local Points of Interest
Medina River Natural AreaStation 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

Five Day Weather Forecast

Mon
H: 59°F
L: 56°F

Tue
H: 74°F
L: 60°F

Wed
H: 81°F
L: 66°F

Thu
H: 88°F
L: 66°F

Fri
H: 92°F
L: 71°F
Air Quality
Nitrogen Dioxide: 4.25 μg/m3
Sulphur Dioxide: 1.45 μg/m3
Ozone: 84 μg/m3
Astronomical
Sun Transit: 1:33 PM
Sunset: 8:04 PM
Daylight: 13 hrs 1 mins
Moon Transit: 4:45 PM
Moonset: 12:04 AM
Moon Phase: Waxing Crescent
Moon Illumination: 10.8%
Best Times for Fishing or Hunting
Major Periods
2:30 AM - 5:00 AM4:15 PM - 6:45 PM
Minor Periods
8:49 AM - 10:19 AM12:00 AM - 12:00 AM
Action Rating: 2 out of 5
Flash Flood Warning issued April 20 at 5:57PM CDT until April 20 at 9:00PM CDT by NWS Austin/San Antonio TX
Effective: Mon April 20, 2026, 5:57 PM
Expires: Mon April 20, 2026, 9:00 PM
FFWEWX The National Weather Service in Austin/San Antonio has issued a * Flash Flood Warning for... Northeastern Bexar County in south central Texas... Southeastern Comal County in south central Texas... West Central Guadalupe County in south central Texas... * Until 900 PM CDT. * At 557 PM CDT, Doppler radar and automated rain gauges indicated heavy rain across the northeast and central parts of Bexar County and northern Guadalupe County. Between 2 and 4 inches of rain have fallen the past three hours. Additional rainfall amounts of 1 to 2 inches are possible in the affected areas within the next 2 to 3 hours. Flash flooding is ongoing according to webcams and reports. HAZARD...Life threatening flash flooding. SOURCE...Radar and rain gauges. IMPACT...Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses. * Some locations that will experience flash flooding include... San Antonio, New Braunfels, Schertz, Seguin, Cibolo, Converse, Universal City, Live Oak, Selma, Randolph AFB, San Antonio Int Airport, Canyon Lake, Kirby, Alamo Heights, Windcrest, Terrell Hills, Bulverde, Garden Ridge, Shavano Park and Hollywood Park.
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding. Be aware of your surroundings and do not drive on flooded roads. Stay away or be swept away. River banks and culverts can become unstable and unsafe. Please report observed flooding to local emergency services or law enforcement and request they pass this information to the National Weather Service when you can do so safely.
Flood Advisory issued April 20 at 7:10PM CDT until April 20 at 8:15PM CDT by NWS Austin/San Antonio TX
Effective: Mon April 20, 2026, 7:10 PM
Expires: Mon April 20, 2026, 8:15 PM
* WHAT...Urban and small stream flooding caused by excessive rainfall continues. * WHERE...A portion of south central Texas, including the following counties, Caldwell, Gonzales, Guadalupe and Wilson. * WHEN...Until 815 PM CDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Water over roadways. Overflowing poor drainage areas. * ADDITIONAL DETAILS... - At 705 PM CDT, Doppler radar indicated localized moderate rain over some areas affected since mid to late afternoon. This will cause new urban and small stream flooding over saturated areas. Between 1 and 3 inches of rain have fallen the past several hours. - Additional rainfall amounts up to 1 inch are expected over the area. This additional rain will result in minor flooding or keep the minor flooding ongoing for a longer period. - Some locations that will experience flooding include... Seguin, Gonzales, Luling, McQueeney, Nixon, Kingsbury, New Berlin, Palmeto State Park, Geronimo, Belmont, Leesville, Bebe, Monthalia, Oak Forest, Ottine, Cost, Wrightsboro, Zipp and Nolte. - http://www.weather.gov/safety/flood
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding. Be aware of your surroundings and do not drive on flooded roads.
Weather Forecast
Air Quality
Nitrogen Dioxide: 11.29 μg/m3
Sulphur Dioxide: 2.72 μg/m3
Ozone: 74.72 μg/m3
Astronomical
Sun Transit: 1:33 PM
Sunset: 8:04 PM
Daylight: 13 hrs 1 mins
Moon Transit: 4:45 PM
Moonset: 12:04 AM
Moon Phase: Waxing Crescent
Moon Illumination: 10.8%
Best Times for Fishing or Hunting
Major Periods
2:30 AM - 5:00 AM4:15 PM - 6:45 PM
Minor Periods
8:49 AM - 10:19 AM12:00 AM - 12:00 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 5.48 μg/m3
Sulphur Dioxide: 1.47 μg/m3
Ozone: 84.88 μg/m3
Astronomical
Sun Transit: 1:33 PM
Sunset: 8:05 PM
Daylight: 13 hrs 3 mins
Moon Transit: 5:49 PM
Moonset: 12:14 AM
Moon Phase: Waxing Crescent
Moon Illumination: 18.8%
Best Times for Fishing or Hunting
Major Periods
3:35 AM - 6:05 AM5:19 PM - 7:49 PM
Minor Periods
9:52 AM - 11:22 AM12:00 AM - 12:00 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 5.83 μg/m3
Sulphur Dioxide: 1.37 μg/m3
Ozone: 73.08 μg/m3
Astronomical
Sun Transit: 1:32 PM
Sunset: 8:05 PM
Daylight: 13 hrs 4 mins
Moon Transit: 6:52 PM
Moonset: 1:16 AM
Moon Phase: Waxing Crescent
Moon Illumination: 28.4%
Best Times for Fishing or Hunting
Major Periods
4:39 AM - 7:09 AM6:22 PM - 8:52 PM
Minor Periods
10:59 AM - 12:29 AM12:46 AM - 2:16 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 4.97 μg/m3
Sulphur Dioxide: 1.37 μg/m3
Ozone: 70.92 μg/m3
Astronomical
Sun Transit: 1:32 PM
Sunset: 8:06 PM
Daylight: 13 hrs 6 mins
Moon Transit: 7:49 PM
Moonset: 2:10 AM
Moon Phase: First Quarter
Moon Illumination: 39.1%
Best Times for Fishing or Hunting
Major Periods
5:40 AM - 8:10 AM7:19 PM - 9:49 PM
Minor Periods
12:08 AM - 1:38 PM1:40 AM - 3:10 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 6.1 μg/m3
Sulphur Dioxide: 1.43 μg/m3
Ozone: 56 μg/m3
Astronomical
Sun Transit: 1:32 PM
Sunset: 8:07 PM
Daylight: 13 hrs 8 mins
Moon Transit: 8:42 PM
Moonset: 2:54 AM
Moon Phase: First Quarter
Moon Illumination: 50.4%
Best Times for Fishing or Hunting
Major Periods
6:35 AM - 9:05 AM8:12 PM - 10:42 PM
Minor Periods
1:14 PM - 2:44 PM2:24 AM - 3:54 AM
Action Rating: 4 out of 5
