August weather in Casa Grande, AZ
The average temperature in Casa Grande in August is 91.3°F (77.3°F–105.3°F). Average precipitation: 1.52 inches.
August is a summer month in Casa Grande, and is warmer than the annual average of 72.4°F. Daily temperatures swing about 28°F between overnight low and afternoon high. Expect about 5 days with precipitation. Daylight averages about 13h 13m. For travel, August is hot.
Avg High
105.3°F
Avg Low
77.3°F
Precipitation
1.52 in
Daylight
13h 13m
August records in Casa Grande
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 118.9°F (1938) | 62.1°F (1908) | 1.72 in (1919) |
| August 2 | 118.9°F (1907) | 62.1°F (1945) | 1.30 in (1990) |
| August 3 | 115.0°F (1907) | 66.0°F (1944) | 1.49 in (2005) |
| August 4 | 120.0°F (1907) | 61.0°F (1926) | 1.54 in (1926) |
| August 5 | 117.0°F (1907) | 59.0°F (1976) | 0.66 in (1972) |
| August 6 | 117.0°F (1906) | 64.9°F (1908) | 1.72 in (1972) |
| August 7 | 117.0°F (2025) | 66.9°F (1930) | 2.40 in (1930) |
| August 8 | 117.0°F (2025) | 64.9°F (1925) | 0.50 in (1921) |
| August 9 | 115.0°F (1906) | 63.0°F (1949) | 1.95 in (1918) |
| August 10 | 117.0°F (1907) | 63.0°F (1949) | 1.36 in (1970) |
| August 11 | 115.0°F (1907) | 64.9°F (1949) | 1.42 in (1966) |
| August 12 | 116.1°F (1933) | 63.0°F (1974) | 3.42 in (1964) |
| August 13 | 113.0°F (2020) | 64.0°F (1925) | 2.60 in (1971) |
| August 14 | 116.1°F (1907) | 59.0°F (1979) | 2.39 in (1990) |
| August 15 | 114.1°F (1907) | 59.0°F (1938) | 1.59 in (1979) |
| August 16 | 113.0°F (1905) | 57.0°F (1971) | 0.89 in (1952) |
| August 17 | 113.0°F (2020) | 57.0°F (1938) | 1.00 in (1997) |
| August 18 | 115.0°F (1907) | 59.0°F (1975) | 1.40 in (1984) |
| August 19 | 115.0°F (1910) | 60.1°F (1908) | 1.16 in (2022) |
| August 20 | 115.0°F (1903) | 61.0°F (1974) | 1.33 in (1971) |
| August 21 | 115.0°F (1907) | 57.0°F (1979) | 2.00 in (1988) |
| August 22 | 114.1°F (1903) | 59.0°F (1908) | 1.41 in (1961) |
| August 23 | 113.0°F (1906) | 55.9°F (1998) | 0.67 in (1963) |
| August 24 | 115.0°F (1985) | 57.0°F (1908) | 0.63 in (1919) |
| August 25 | 113.0°F (2020) | 62.1°F (1979) | 1.29 in (1982) |
| August 26 | 113.0°F (1981) | 64.0°F (1933) | 1.82 in (1986) |
| August 27 | 113.0°F (1981) | 60.1°F (1954) | 0.90 in (1993) |
| August 28 | 114.1°F (1998) | 62.1°F (1956) | 1.95 in (1951) |
| August 29 | 115.0°F (1905) | 59.0°F (1974) | 0.84 in (1953) |
| August 30 | 118.0°F (1905) | 57.9°F (1942) | 1.02 in (1908) |
| August 31 | 111.9°F (1981) | 60.1°F (1907) | 1.17 in (1997) |