August weather in San Bruno, CA
The average temperature in San Bruno in August is 62.2°F (53.3°F–71.0°F). Average precipitation: 0.08 inches.
August is a summer month in San Bruno, and is warmer than the annual average of 57.4°F. Daily temperatures swing about 17.7°F between overnight low and afternoon high. Expect about 1 days with precipitation. Daylight averages about 13h 27m. For travel, August is one of the best months of the year to visit.
Avg High
71.0°F
Avg Low
53.3°F
Precipitation
0.08 in
Daylight
13h 27m
August records in San Bruno
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 93.0°F (1993) | 48.9°F (2000) | 0.22 in (2004) |
| August 2 | 87.1°F (1993) | 48.0°F (1987) | 0.00 in (1984) |
| August 3 | 88.0°F (1985) | 50.0°F (1987) | 0.08 in (1991) |
| August 4 | 82.0°F (1985) | 48.9°F (1996) | 0.07 in (1991) |
| August 5 | 79.0°F (1998) | 48.9°F (1994) | 0.01 in (2010) |
| August 6 | 88.0°F (1990) | 48.9°F (1987) | 0.01 in (2010) |
| August 7 | 90.0°F (1990) | 50.0°F (1996) | 0.00 in (1984) |
| August 8 | 93.0°F (1990) | 50.0°F (1985) | 0.03 in (1994) |
| August 9 | 93.0°F (1990) | 48.9°F (1984) | 0.04 in (1994) |
| August 10 | 93.0°F (1990) | 48.9°F (1985) | 0.00 in (1984) |
| August 11 | 81.0°F (1991) | 48.0°F (2000) | 0.01 in (2010) |
| August 12 | 80.1°F (1995) | 44.1°F (2000) | 0.02 in (2010) |
| August 13 | 91.0°F (1991) | 45.0°F (2000) | 0.17 in (1991) |
| August 14 | 86.0°F (1991) | 46.0°F (2000) | 0.07 in (1991) |
| August 15 | 82.0°F (1989) | 43.0°F (2000) | 0.00 in (1984) |
| August 16 | 78.1°F (1987) | 39.9°F (2000) | 0.02 in (2010) |
| August 17 | 79.0°F (1988) | 44.1°F (2000) | 0.02 in (2010) |
| August 18 | 78.1°F (1995) | 46.0°F (2000) | 0.07 in (1991) |
| August 19 | 84.9°F (1995) | 48.0°F (2000) | 0.24 in (1997) |
| August 20 | 84.9°F (1995) | 34.0°F (1986) | 0.70 in (1997) |
| August 21 | 81.0°F (2003) | 50.0°F (2000) | 0.03 in (1991) |
| August 22 | 80.1°F (1999) | 50.0°F (2000) | 0.00 in (1984) |
| August 23 | 84.9°F (2010) | 48.0°F (2000) | 0.00 in (1984) |
| August 24 | 96.1°F (2010) | 45.0°F (2000) | 0.00 in (1984) |
| August 25 | 91.0°F (1988) | 48.9°F (2000) | 0.02 in (2011) |
| August 26 | 84.0°F (1988) | 46.9°F (2000) | 0.01 in (2011) |
| August 27 | 90.0°F (1993) | 48.0°F (2000) | 0.01 in (2011) |
| August 28 | 95.0°F (2009) | 44.1°F (2000) | 0.01 in (2011) |
| August 29 | 82.0°F (2004) | 46.0°F (2000) | 0.03 in (2000) |
| August 30 | 81.0°F (1987) | 46.0°F (2000) | 0.13 in (1984) |
| August 31 | 82.9°F (2005) | 46.0°F (2000) | 0.09 in (1991) |