August weather in Grand Terrace, CA
The average temperature in Grand Terrace in August is 80.2°F (63.7°F–96.6°F). Average precipitation: 0.03 inches.
August is a summer month in Grand Terrace, and is warmer than the annual average of 66.6°F. Daily temperatures swing about 32.9°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
96.6°F
Avg Low
63.7°F
Precipitation
0.03 in
Daylight
13h 16m
August records in Grand Terrace
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 106.0°F (1972) | 55.0°F (1956) | 0.00 in (1948) |
| August 2 | 106.0°F (1959) | 53.1°F (1964) | 0.00 in (1948) |
| August 3 | 107.1°F (1998) | 54.0°F (1965) | 0.00 in (1948) |
| August 4 | 106.0°F (1998) | 52.0°F (1956) | 0.00 in (1948) |
| August 5 | 109.9°F (1997) | 52.0°F (1956) | 0.00 in (1948) |
| August 6 | 108.0°F (1983) | 54.0°F (1956) | 0.00 in (1948) |
| August 7 | 102.9°F (1970) | 53.1°F (1991) | 0.08 in (1983) |
| August 8 | 109.0°F (1970) | 53.1°F (1999) | 0.07 in (1967) |
| August 9 | 105.1°F (1964) | 54.0°F (1956) | 0.50 in (1998) |
| August 10 | 106.0°F (1965) | 54.0°F (1963) | 0.01 in (1998) |
| August 11 | 105.1°F (2000) | 54.0°F (1962) | 0.00 in (1948) |
| August 12 | 108.0°F (1994) | 54.0°F (1976) | 0.12 in (1965) |
| August 13 | 106.0°F (1962) | 54.0°F (1988) | 0.02 in (1973) |
| August 14 | 107.1°F (2003) | 53.1°F (1988) | 0.00 in (1948) |
| August 15 | 106.0°F (1962) | 53.1°F (1988) | 0.11 in (1958) |
| August 16 | 106.0°F (1992) | 51.1°F (1987) | 0.14 in (1983) |
| August 17 | 107.1°F (1992) | 53.1°F (1975) | 1.18 in (1977) |
| August 18 | 104.0°F (1962) | 53.1°F (1978) | 1.14 in (1977) |
| August 19 | 104.0°F (1960) | 54.0°F (1969) | 0.48 in (1983) |
| August 20 | 104.0°F (1960) | 53.1°F (1956) | 0.00 in (1948) |
| August 21 | 105.1°F (1969) | 50.0°F (1964) | 0.00 in (1948) |
| August 22 | 107.1°F (1969) | 48.9°F (1968) | 0.00 in (1948) |
| August 23 | 107.1°F (1969) | 52.0°F (1962) | 0.00 in (1948) |
| August 24 | 109.0°F (1956) | 48.9°F (1978) | 0.54 in (1967) |
| August 25 | 111.0°F (1985) | 51.1°F (1963) | 0.07 in (1968) |
| August 26 | 107.1°F (1981) | 51.1°F (1965) | 0.00 in (1948) |
| August 27 | 109.9°F (1981) | 52.0°F (1961) | 0.30 in (1970) |
| August 28 | 109.0°F (1981) | 51.1°F (1961) | 0.05 in (1951) |
| August 29 | 111.9°F (1998) | 52.0°F (1961) | 0.00 in (1948) |
| August 30 | 111.9°F (1976) | 51.1°F (1961) | 0.00 in (1948) |
| August 31 | 109.0°F (1967) | 50.0°F (1965) | 0.03 in (1998) |