August weather in Portales, NM
The average temperature in Portales in August is 78.1°F (64.9°F–91.3°F). Average precipitation: 2.91 inches.
August is a summer month in Portales, and is warmer than the annual average of 60.1°F. Daily temperatures swing about 26.4°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 13h 17m. For travel, August is hot.
Avg High
91.3°F
Avg Low
64.9°F
Precipitation
2.91 in
Daylight
13h 17m
August records in Portales
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 105.1°F (1944) | 52.0°F (1925) | 1.55 in (2017) |
| August 2 | 104.0°F (2012) | 52.0°F (1925) | 0.72 in (1917) |
| August 3 | 104.0°F (2012) | 54.0°F (1915) | 4.16 in (1976) |
| August 4 | 104.0°F (2003) | 55.0°F (1975) | 2.10 in (2017) |
| August 5 | 106.0°F (2023) | 53.1°F (1949) | 1.10 in (1912) |
| August 6 | 105.1°F (2015) | 52.0°F (1949) | 0.98 in (2010) |
| August 7 | 104.0°F (1937) | 55.0°F (1913) | 1.75 in (1929) |
| August 8 | 105.1°F (1937) | 51.1°F (1929) | 2.45 in (1971) |
| August 9 | 105.1°F (2011) | 51.1°F (1915) | 1.98 in (1984) |
| August 10 | 102.9°F (1937) | 54.0°F (1915) | 3.00 in (1987) |
| August 11 | 102.9°F (2012) | 53.1°F (1931) | 2.95 in (1981) |
| August 12 | 106.0°F (2020) | 52.0°F (1979) | 5.15 in (1952) |
| August 13 | 104.0°F (1969) | 50.0°F (1906) | 2.09 in (2021) |
| August 14 | 102.9°F (2020) | 52.0°F (1965) | 1.27 in (1926) |
| August 15 | 102.9°F (1929) | 51.1°F (1942) | 0.85 in (1959) |
| August 16 | 102.0°F (1969) | 51.1°F (1920) | 1.75 in (2010) |
| August 17 | 107.1°F (1969) | 52.0°F (1950) | 2.15 in (1935) |
| August 18 | 106.0°F (2019) | 53.1°F (1950) | 1.32 in (2008) |
| August 19 | 104.0°F (1945) | 50.0°F (1950) | 1.95 in (2006) |
| August 20 | 105.1°F (2007) | 48.9°F (1950) | 4.40 in (2002) |
| August 21 | 105.1°F (2007) | 50.0°F (1956) | 2.89 in (1954) |
| August 22 | 104.0°F (2024) | 51.1°F (1920) | 1.99 in (1954) |
| August 23 | 102.0°F (2024) | 52.0°F (1915) | 2.15 in (1954) |
| August 24 | 100.9°F (2024) | 52.0°F (1974) | 1.96 in (1934) |
| August 25 | 102.0°F (1922) | 21.9°F (1982) | 2.72 in (1933) |
| August 26 | 100.9°F (1922) | 45.0°F (2010) | 1.10 in (1960) |
| August 27 | 102.0°F (2011) | 50.0°F (1915) | 2.60 in (1933) |
| August 28 | 102.0°F (2020) | 48.0°F (1915) | 2.75 in (1946) |
| August 29 | 100.0°F (1922) | 42.1°F (1915) | 2.40 in (1933) |
| August 30 | 100.9°F (2011) | 39.9°F (1915) | 2.85 in (2024) |
| August 31 | 102.0°F (2011) | 45.0°F (1915) | 2.30 in (2025) |