August weather in Montclair, CA
The average temperature in Montclair in August is 77.5°F (62.7°F–92.4°F). Average precipitation: 0.03 inches.
August is a summer month in Montclair, and is warmer than the annual average of 65.1°F. Daily temperatures swing about 29.7°F between overnight low and afternoon high. Expect about 0 days with precipitation. Daylight averages about 13h 16m. For travel, August is hot.
Avg High
92.4°F
Avg Low
62.7°F
Precipitation
0.03 in
Daylight
13h 16m
August records in Montclair
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 107.1°F (1900) | 48.9°F (1942) | 0.04 in (1923) |
| August 2 | 104.0°F (1938) | 46.9°F (1942) | 0.42 in (1945) |
| August 3 | 109.9°F (1918) | 45.0°F (1944) | 0.00 in (1896) |
| August 4 | 104.0°F (1913) | 46.9°F (1944) | 0.04 in (1961) |
| August 5 | 102.0°F (1947) | 45.0°F (1950) | 0.00 in (1896) |
| August 6 | 106.0°F (1983) | 43.0°F (1950) | 0.00 in (1896) |
| August 7 | 100.9°F (2012) | 45.0°F (1950) | 0.06 in (1963) |
| August 8 | 102.9°F (1965) | 45.0°F (2006) | 0.00 in (1896) |
| August 9 | 108.0°F (1898) | 44.1°F (1916) | 0.01 in (1978) |
| August 10 | 104.0°F (1898) | 46.9°F (1948) | 0.21 in (1942) |
| August 11 | 106.0°F (1933) | 44.1°F (1950) | 0.00 in (1896) |
| August 12 | 107.1°F (1898) | 43.0°F (1950) | 0.34 in (1972) |
| August 13 | 105.1°F (1967) | 45.0°F (1916) | 0.14 in (1931) |
| August 14 | 105.1°F (2003) | 46.0°F (1919) | 0.10 in (2012) |
| August 15 | 104.0°F (1898) | 46.9°F (1913) | 0.35 in (1984) |
| August 16 | 102.0°F (1901) | 46.0°F (1918) | 0.02 in (1918) |
| August 17 | 102.0°F (1946) | 45.0°F (1913) | 1.17 in (1977) |
| August 18 | 106.0°F (1932) | 44.1°F (1918) | 1.22 in (1977) |
| August 19 | 102.9°F (1898) | 43.0°F (1916) | 0.25 in (1945) |
| August 20 | 104.0°F (1898) | 43.0°F (1925) | 0.38 in (1934) |
| August 21 | 107.1°F (1969) | 46.9°F (1900) | 0.00 in (1896) |
| August 22 | 106.0°F (1969) | 45.0°F (1918) | 0.00 in (1896) |
| August 23 | 107.1°F (1956) | 45.0°F (1925) | 0.00 in (1896) |
| August 24 | 109.0°F (1926) | 46.0°F (1948) | 0.00 in (1896) |
| August 25 | 109.9°F (1894) | 48.0°F (1943) | 0.04 in (1935) |
| August 26 | 109.0°F (1901) | 46.0°F (1920) | 0.02 in (1919) |
| August 27 | 106.0°F (1937) | 42.1°F (1920) | 0.02 in (1915) |
| August 28 | 107.1°F (2009) | 44.1°F (1914) | 0.00 in (1896) |
| August 29 | 109.0°F (1967) | 45.0°F (1917) | 0.36 in (1931) |
| August 30 | 108.0°F (1967) | 45.0°F (1947) | 0.00 in (1896) |
| August 31 | 107.1°F (1929) | 43.0°F (1928) | 0.00 in (1896) |