July weather in Mercedes, TX
The average temperature in Mercedes in July is 86.1°F (76.5°F–95.7°F). Average precipitation: 2.24 inches.
July is a summer month in Mercedes, and is warmer than the annual average of 75°F. Daily temperatures swing about 19.2°F between overnight low and afternoon high. Daylight averages about 13h 29m. For travel, July is hot.
Avg High
95.7°F
Avg Low
76.5°F
Precipitation
2.24 in
Daylight
13h 29m
July records in Mercedes
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| July 1 | 100.9°F (1937) | 66.9°F (1966) | 7.88 in (2010) |
| July 2 | 107.1°F (1937) | 68.0°F (1966) | 2.01 in (2025) |
| July 3 | 102.0°F (1946) | 63.0°F (1924) | 1.40 in (1916) |
| July 4 | 104.0°F (1946) | 55.0°F (1930) | 1.67 in (1999) |
| July 5 | 102.0°F (1946) | 55.9°F (1930) | 2.00 in (1919) |
| July 6 | 100.0°F (1943) | 55.0°F (1930) | 2.85 in (1981) |
| July 7 | 102.0°F (1998) | 66.0°F (1924) | 5.58 in (2021) |
| July 8 | 102.9°F (2009) | 68.0°F (1924) | 2.00 in (2008) |
| July 9 | 104.0°F (1939) | 70.0°F (1986) | 2.07 in (1976) |
| July 10 | 108.0°F (1939) | 70.0°F (1943) | 2.03 in (1971) |
| July 11 | 102.9°F (1931) | 69.1°F (1957) | 1.33 in (2024) |
| July 12 | 100.9°F (1945) | 69.1°F (1957) | 1.79 in (1936) |
| July 13 | 104.0°F (1918) | 69.1°F (1940) | 2.72 in (1975) |
| July 14 | 102.0°F (1945) | 68.0°F (1918) | 1.60 in (1926) |
| July 15 | 102.0°F (1945) | 69.1°F (1975) | 4.77 in (1983) |
| July 16 | 102.0°F (1945) | 66.9°F (1967) | 1.81 in (1940) |
| July 17 | 102.0°F (1945) | 70.0°F (1921) | 2.68 in (1931) |
| July 18 | 102.0°F (1918) | 70.0°F (1951) | 2.08 in (1999) |
| July 19 | 102.0°F (1998) | 66.9°F (1945) | 0.58 in (2012) |
| July 20 | 106.0°F (1944) | 70.0°F (1927) | 1.57 in (1992) |
| July 21 | 104.0°F (1947) | 68.0°F (1927) | 2.18 in (1917) |
| July 22 | 102.9°F (1947) | 68.0°F (1927) | 3.12 in (2021) |
| July 23 | 102.0°F (1998) | 66.9°F (1927) | 2.01 in (1988) |
| July 24 | 102.9°F (1946) | 66.0°F (1915) | 7.20 in (2008) |
| July 25 | 104.0°F (1943) | 64.0°F (1915) | 1.50 in (2024) |
| July 26 | 102.9°F (1943) | 64.9°F (1927) | 3.40 in (1961) |
| July 27 | 104.0°F (1943) | 64.0°F (1927) | 2.10 in (1989) |
| July 28 | 104.0°F (1943) | 63.0°F (1927) | 0.88 in (1968) |
| July 29 | 104.0°F (1943) | 63.0°F (1927) | 1.21 in (1968) |
| July 30 | 102.9°F (1944) | 0.0°F (2014) | 1.50 in (1931) |
| July 31 | 105.1°F (1946) | 69.1°F (1922) | 1.08 in (1947) |