January weather in San Marino, CA
The average temperature in San Marino in January is 56.8°F (45.5°F–68.1°F). Average precipitation: 4.51 inches.
January is a winter month in San Marino, and is cooler than the annual average of 66°F. Daily temperatures swing about 22.6°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 9h 58m. For travel, January is a comfortable month to visit.
Avg High
68.1°F
Avg Low
45.5°F
Precipitation
4.51 in
Daylight
9h 58m
January records in San Marino
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 86.0°F (1918) | 25.0°F (1919) | 6.21 in (1934) |
| January 2 | 84.9°F (2012) | 26.1°F (1919) | 2.08 in (1922) |
| January 3 | 84.9°F (1913) | 28.9°F (1919) | 1.77 in (1977) |
| January 4 | 87.1°F (2012) | 23.0°F (1949) | 1.90 in (1995) |
| January 5 | 86.0°F (1969) | 25.0°F (1949) | 5.20 in (2008) |
| January 6 | 84.9°F (1969) | 25.0°F (1913) | 2.82 in (1959) |
| January 7 | 88.0°F (1962) | 21.0°F (1913) | 3.37 in (1974) |
| January 8 | 89.1°F (1923) | 25.0°F (1913) | 3.88 in (1907) |
| January 9 | 89.1°F (1923) | 24.1°F (1937) | 5.17 in (2005) |
| January 10 | 86.0°F (1923) | 26.1°F (1937) | 5.30 in (1995) |
| January 11 | 82.9°F (1983) | 27.0°F (1913) | 3.65 in (2001) |
| January 12 | 84.9°F (1928) | 28.9°F (1916) | 1.42 in (1952) |
| January 13 | 84.9°F (1973) | 27.0°F (1963) | 2.68 in (1957) |
| January 14 | 89.1°F (1975) | 27.0°F (1932) | 1.48 in (1969) |
| January 15 | 89.1°F (2021) | 30.9°F (1949) | 1.93 in (1978) |
| January 16 | 89.1°F (2021) | 30.9°F (1917) | 4.61 in (1952) |
| January 17 | 89.1°F (1971) | 27.0°F (1917) | 4.68 in (1916) |
| January 18 | 93.0°F (1971) | 28.9°F (1917) | 4.77 in (1914) |
| January 19 | 91.0°F (1971) | 30.0°F (1943) | 4.73 in (1933) |
| January 20 | 84.9°F (1975) | 21.9°F (1922) | 2.20 in (1969) |
| January 21 | 82.0°F (1912) | 25.0°F (1922) | 3.80 in (1909) |
| January 22 | 82.9°F (1910) | 24.1°F (1937) | 7.08 in (1943) |
| January 23 | 84.9°F (1953) | 23.0°F (1937) | 5.86 in (1943) |
| January 24 | 88.0°F (1951) | 28.0°F (1937) | 2.53 in (1967) |
| January 25 | 89.1°F (1951) | 32.0°F (1937) | 4.62 in (1969) |
| January 26 | 88.0°F (1971) | 30.0°F (1937) | 6.51 in (1956) |
| January 27 | 86.0°F (1971) | 30.0°F (1950) | 2.71 in (2008) |
| January 28 | 84.9°F (1962) | 28.9°F (1948) | 1.65 in (1915) |
| January 29 | 88.0°F (1971) | 28.9°F (1979) | 3.94 in (1980) |
| January 30 | 86.0°F (1971) | 32.0°F (1916) | 3.14 in (1893) |
| January 31 | 91.0°F (2003) | 30.0°F (1916) | 2.51 in (1926) |