August weather in McAllen, TX
The average temperature in McAllen in August is 88.0°F (77.0°F–98.9°F). Average precipitation: 1.45 inches.
August is a summer month in McAllen, and is warmer than the annual average of 75.5°F. Daily temperatures swing about 21.9°F between overnight low and afternoon high. Expect about 4 days with precipitation. Daylight averages about 12h 56m. For travel, August is hot.
Avg High
98.9°F
Avg Low
77.0°F
Precipitation
1.45 in
Daylight
12h 56m
August records in McAllen
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 105.1°F (2017) | 64.9°F (1974) | 2.12 in (1947) |
| August 2 | 104.0°F (2012) | 68.0°F (1974) | 0.75 in (1951) |
| August 3 | 106.0°F (2017) | 69.1°F (1945) | 3.66 in (1973) |
| August 4 | 102.9°F (1977) | 68.0°F (1948) | 1.06 in (1947) |
| August 5 | 102.0°F (2016) | 70.0°F (1974) | 0.42 in (1971) |
| August 6 | 104.0°F (2014) | 68.0°F (1975) | 0.87 in (1941) |
| August 7 | 104.0°F (2013) | 66.0°F (2001) | 1.20 in (1975) |
| August 8 | 106.0°F (2003) | 66.9°F (2001) | 0.38 in (1963) |
| August 9 | 106.0°F (2003) | 68.0°F (1950) | 3.74 in (1980) |
| August 10 | 105.1°F (1997) | 69.1°F (1950) | 7.81 in (1980) |
| August 11 | 105.1°F (2003) | 69.1°F (1950) | 1.08 in (1975) |
| August 12 | 105.1°F (2003) | 68.0°F (1950) | 2.57 in (1960) |
| August 13 | 102.9°F (2009) | 57.0°F (2001) | 0.75 in (2025) |
| August 14 | 104.0°F (2015) | 57.0°F (2001) | 0.75 in (2003) |
| August 15 | 104.0°F (1949) | 57.0°F (2001) | 1.35 in (1970) |
| August 16 | 102.9°F (1949) | 64.0°F (1972) | 1.75 in (2003) |
| August 17 | 102.0°F (1943) | 69.1°F (1947) | 0.56 in (1988) |
| August 18 | 102.9°F (1981) | 68.0°F (1943) | 0.65 in (2005) |
| August 19 | 104.0°F (2017) | 69.1°F (1948) | 4.26 in (2008) |
| August 20 | 102.9°F (2011) | 69.1°F (1946) | 1.53 in (1967) |
| August 21 | 102.9°F (1997) | 69.1°F (1961) | 1.14 in (1969) |
| August 22 | 104.0°F (2024) | 64.0°F (1946) | 2.19 in (1944) |
| August 23 | 102.9°F (1997) | 66.0°F (1946) | 1.93 in (1999) |
| August 24 | 104.0°F (2009) | 66.9°F (1949) | 1.33 in (1976) |
| August 25 | 104.0°F (2014) | 66.9°F (1957) | 1.36 in (1959) |
| August 26 | 105.1°F (2014) | 66.9°F (1961) | 2.00 in (1970) |
| August 27 | 105.1°F (2014) | 66.9°F (1961) | 1.00 in (1953) |
| August 28 | 104.0°F (2023) | 66.9°F (1958) | 3.62 in (1979) |
| August 29 | 102.9°F (2002) | 64.0°F (1958) | 2.14 in (1977) |
| August 30 | 106.0°F (2012) | 66.0°F (2004) | 1.92 in (2014) |
| August 31 | 106.0°F (2012) | 62.1°F (2004) | 2.27 in (1944) |