January weather in San Ramon, CA
The average temperature in San Ramon in January is 47.7°F (41.7°F–53.7°F). Average precipitation: 5.06 inches.
January is a winter month in San Ramon, and is cooler than the annual average of 58.4°F. Daily temperatures swing about 12°F between overnight low and afternoon high. Expect about 12 days with precipitation. Daylight averages about 9h 40m. For travel, January is a wet month.
Avg High
53.7°F
Avg Low
41.7°F
Precipitation
5.06 in
Snow
0.1 in
January records in San Ramon
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 73.0°F (1964) | 27.0°F (1988) | 1.33 in (2023) |
| January 2 | 71.1°F (1957) | 26.1°F (1974) | 2.82 in (1997) |
| January 3 | 71.1°F (2001) | 26.1°F (1974) | 1.44 in (2017) |
| January 4 | 70.0°F (1991) | 24.1°F (1960) | 1.65 in (2017) |
| January 5 | 70.0°F (2001) | 27.0°F (1974) | 4.00 in (1982) |
| January 6 | 69.1°F (1969) | 27.0°F (1974) | 2.18 in (2023) |
| January 7 | 75.9°F (1986) | 27.0°F (1974) | 2.18 in (2023) |
| January 8 | 73.9°F (1986) | 25.0°F (1989) | 3.11 in (2017) |
| January 9 | 71.1°F (2015) | 27.0°F (1974) | 2.03 in (2023) |
| January 10 | 68.0°F (1983) | 28.0°F (1974) | 4.27 in (2017) |
| January 11 | 73.0°F (1983) | 23.0°F (2007) | 1.37 in (1979) |
| January 12 | 73.0°F (1983) | 21.9°F (2007) | 2.15 in (2001) |
| January 13 | 77.0°F (1983) | 21.9°F (2007) | 3.57 in (1993) |
| January 14 | 72.0°F (2009) | 21.9°F (2007) | 1.69 in (1980) |
| January 15 | 73.9°F (2009) | 27.0°F (1989) | 1.80 in (1979) |
| January 16 | 73.0°F (1967) | 27.0°F (1987) | 2.82 in (2023) |
| January 17 | 73.0°F (1976) | 26.1°F (2007) | 1.95 in (1954) |
| January 18 | 73.9°F (1976) | 28.9°F (1995) | 1.45 in (2017) |
| January 19 | 72.0°F (1961) | 30.0°F (2001) | 2.76 in (2010) |
| January 20 | 75.0°F (1977) | 28.9°F (1962) | 1.48 in (1962) |
| January 21 | 75.0°F (2005) | 21.0°F (1962) | 5.02 in (1967) |
| January 22 | 77.0°F (1989) | 18.0°F (1962) | 2.36 in (1967) |
| January 23 | 70.0°F (1976) | 18.0°F (1962) | 1.99 in (1997) |
| January 24 | 73.9°F (1968) | 27.0°F (2008) | 3.24 in (2000) |
| January 25 | 71.1°F (1975) | 27.0°F (2008) | 1.63 in (1956) |
| January 26 | 73.9°F (2015) | 25.0°F (1957) | 1.84 in (1961) |
| January 27 | 72.0°F (1988) | 19.9°F (1957) | 1.56 in (1983) |
| January 28 | 70.0°F (1962) | 23.0°F (1957) | 1.35 in (1981) |
| January 29 | 73.0°F (1988) | 23.0°F (2008) | 1.41 in (1967) |
| January 30 | 73.0°F (1976) | 24.1°F (1957) | 2.01 in (1968) |
| January 31 | 75.0°F (1971) | 23.0°F (2008) | 2.49 in (1963) |