January weather in San Bruno, CA
The average temperature in San Bruno in January is 51.7°F (45.3°F–58.1°F). Average precipitation: 6.14 inches.
January is a winter month in San Bruno, and is cooler than the annual average of 57.4°F. Daily temperatures swing about 12.8°F between overnight low and afternoon high. Expect about 11 days with precipitation. Daylight averages about 9h 40m. For travel, January is a wet month.
Avg High
58.1°F
Avg Low
45.3°F
Precipitation
6.14 in
Daylight
9h 40m
January records in San Bruno
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 64.0°F (1996) | 33.1°F (2001) | 2.50 in (1997) |
| January 2 | 66.9°F (1996) | 32.0°F (2001) | 2.32 in (1997) |
| January 3 | 66.9°F (1999) | 35.1°F (1993) | 1.78 in (1987) |
| January 4 | 64.9°F (1984) | 28.9°F (2008) | 3.40 in (2008) |
| January 5 | 66.0°F (2001) | 28.9°F (2008) | 1.35 in (1992) |
| January 6 | 64.9°F (1999) | 37.0°F (1989) | 0.65 in (1993) |
| January 7 | 64.0°F (2012) | 36.0°F (2001) | 2.63 in (1993) |
| January 8 | 68.0°F (1986) | 36.0°F (2001) | 0.42 in (2008) |
| January 9 | 64.9°F (2007) | 34.0°F (2001) | 1.00 in (1995) |
| January 10 | 66.0°F (2009) | 37.9°F (2011) | 1.94 in (1995) |
| January 11 | 72.0°F (2009) | 36.0°F (1987) | 1.55 in (2001) |
| January 12 | 73.0°F (2009) | 36.0°F (1987) | 2.25 in (1998) |
| January 13 | 73.9°F (2009) | 33.1°F (1997) | 3.49 in (1993) |
| January 14 | 73.0°F (2009) | 32.0°F (1997) | 1.23 in (2006) |
| January 15 | 72.0°F (2009) | 37.9°F (1985) | 0.97 in (1998) |
| January 16 | 71.1°F (2009) | 37.9°F (1987) | 1.59 in (1996) |
| January 17 | 70.0°F (2009) | 35.1°F (2000) | 1.09 in (1988) |
| January 18 | 68.0°F (2009) | 39.9°F (1989) | 1.85 in (1999) |
| January 19 | 70.0°F (1994) | 41.0°F (1985) | 1.73 in (2010) |
| January 20 | 70.0°F (2009) | 39.0°F (1992) | 1.88 in (2012) |
| January 21 | 70.0°F (2009) | 41.0°F (1992) | 1.33 in (2010) |
| January 22 | 64.9°F (2011) | 30.0°F (2010) | 1.00 in (1997) |
| January 23 | 66.9°F (2011) | 34.0°F (1992) | 1.39 in (2000) |
| January 24 | 68.0°F (1988) | 35.1°F (1992) | 3.63 in (2000) |
| January 25 | 66.9°F (1990) | 39.0°F (1985) | 3.10 in (2008) |
| January 26 | 66.0°F (1984) | 39.0°F (1985) | 0.83 in (1997) |
| January 27 | 68.0°F (2011) | 37.9°F (2010) | 1.74 in (1995) |
| January 28 | 66.9°F (1984) | 34.0°F (2010) | 0.83 in (2005) |
| January 29 | 66.0°F (2009) | 30.0°F (2010) | 1.13 in (1998) |
| January 30 | 68.0°F (2009) | 37.0°F (2010) | 0.65 in (2006) |
| January 31 | 66.0°F (1995) | 28.9°F (2010) | 1.65 in (1996) |