San Bruno, Sunday, 9 August, 09:39
Mostly clear. Feels like 64°. High 85°, low 59°.
In January, San Bruno, CA averages a high of 55.2° and a low of 43.9°. About 3.8 inches of precipitation fall over the month (9 wet days). The record high is 70° (2014) and the record low 29.1° (1962). Normals are computed over the last 60 years.
| Day | High | Low | Chance of precip. | Record high | Record low |
|---|---|---|---|---|---|
| 1 | 54.1° | 42.8° | 22% | 66° (2012) | 32.2° (1991) |
| 2 | 54.1° | 42.4° | 28% | 64° (2014) | 32° (1991) |
| 3 | 53.8° | 43.2° | 27% | 63.7° (2014) | 35.2° (1993) |
| 4 | 54.3° | 43.3° | 32% | 64.9° (2018) | 33.8° (1968) |
| 5 | 53.8° | 43.5° | 37% | 64.2° (2014) | 34.2° (1971) |
| 6 | 53.8° | 42.6° | 23% | 63.3° (2014) | 34.2° (1968) |
| 7 | 54.3° | 43.7° | 28% | 65.5° (1962) | 34.9° (1968) |
| 8 | 54.9° | 44.6° | 30% | 68.4° (1962) | 35.1° (1982) |
| 9 | 54.7° | 45.1° | 35% | 65.5° (1962) | 36.7° (1992) |
| 10 | 55° | 43.7° | 22% | 64.8° (1990) | 34° (1974) |
| 11 | 55.2° | 44.1° | 32% | 63° (2009) | 33.4° (1968) |
| 12 | 55.6° | 44.6° | 25% | 66.6° (2009) | 32.7° (1963) |
| 13 | 55.9° | 44.6° | 22% | 66.7° (2009) | 31.6° (1963) |
| 14 | 55.8° | 43.9° | 30% | 68° (2014) | 34.7° (1997) |
| 15 | 55.8° | 44.2° | 28% | 69.6° (2014) | 32.7° (2007) |
| 16 | 55.9° | 45° | 38% | 70° (2014) | 34.9° (2013) |
| 17 | 56.1° | 44.1° | 30% | 69.6° (2014) | 35.2° (1987) |
| 18 | 56.5° | 44.2° | 28% | 70° (2021) | 36.3° (1968) |
| 19 | 55.9° | 44.6° | 32% | 68° (2014) | 35.8° (1980) |
| 20 | 55.8° | 44.4° | 23% | 66.7° (1976) | 36.3° (1966) |
| 21 | 55.8° | 44.1° | 37% | 65.8° (2014) | 34.5° (1962) |
| 22 | 55.8° | 44.4° | 37% | 64.9° (1968) | 29.1° (1962) |
| 23 | 55.6° | 43.9° | 38% | 66° (2014) | 35.2° (1973) |
| 24 | 55.8° | 43.5° | 35% | 65.3° (2014) | 34° (1962) |
| 25 | 55.9° | 43.9° | 28% | 66° (2014) | 36.7° (1966) |
| 26 | 55.4° | 44.8° | 32% | 64.9° (1986) | 36.1° (1973) |
| 27 | 55.8° | 43.5° | 25% | 65.5° (1986) | 36° (1963) |
| 28 | 55.4° | 43.5° | 28% | 66.4° (1976) | 35.8° (1975) |
| 29 | 55.4° | 43.7° | 25% | 67.5° (2024) | 31.6° (2002) |
| 30 | 55.4° | 43.7° | 30% | 67.8° (1976) | 32.7° (1980) |
| 31 | 55° | 43.9° | 20% | 67.8° (1976) | 34° (1972) |