Highest Daily Low Temperatures in Rio Grande City History

This is a list of the hottest daily low temperatures ever recorded in Rio Grande City, Texas history from 1892–2024 based on data from the NOAA.

Highest temperatures all-time

Record for the highest daily low temperature in Rio Grande City

The highest low temperature for a calendar day in Rio Grande City, Texas history was 90 °F which has happened 3 times, most recently on Monday August 19, 1901.

Rank	Temperature	Date
1	90 °F	August 19, 1901
1	90 °F	August 17, 1901
1	90 °F	August 16, 1901
4	89 °F	August 28, 1901
4	89 °F	August 18, 1901
4	89 °F	August 15, 1901
7	88 °F	September 2, 1901
7	88 °F	August 22, 1901
7	88 °F	August 5, 1901
10	87 °F	June 28, 1902
10	87 °F	August 27, 1901
10	87 °F	August 25, 1901
13	86 °F	June 11, 1902
13	86 °F	September 1, 1901
13	86 °F	August 26, 1901
13	86 °F	August 23, 1901
13	86 °F	August 20, 1901
13	86 °F	August 13, 1901
13	86 °F	August 11, 1901
13	86 °F	August 10, 1901
13	86 °F	August 7, 1901
13	86 °F	August 6, 1901
13	86 °F	August 1, 1901
13	86 °F	July 31, 1901