January weather in San Carlos, CA
The average temperature in San Carlos in January is 49.7°F (40.5°F–58.9°F). Average precipitation: 3.81 inches.
January is a winter month in San Carlos, and is cooler than the annual average of 59.4°F. Daily temperatures swing about 18.4°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 9h 41m. For travel, January is a comfortable month to visit.
Avg High
58.9°F
Avg Low
40.5°F
Precipitation
3.81 in
Daylight
9h 41m
January records in San Carlos
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 66.9°F (1996) | 27.0°F (1933) | 2.58 in (1940) |
| January 2 | 71.1°F (1996) | 24.1°F (1960) | 2.00 in (2004) |
| January 3 | 71.1°F (1996) | 25.0°F (1976) | 3.07 in (1916) |
| January 4 | 69.1°F (1946) | 25.0°F (1947) | 1.33 in (1982) |
| January 5 | 69.1°F (2014) | 21.9°F (1949) | 2.19 in (1982) |
| January 6 | 70.0°F (2003) | 24.1°F (1950) | 1.73 in (2019) |
| January 7 | 73.0°F (1962) | 23.0°F (1937) | 1.50 in (1940) |
| January 8 | 75.0°F (1962) | 21.9°F (1937) | 2.47 in (2018) |
| January 9 | 75.0°F (2025) | 19.0°F (1937) | 2.31 in (1959) |
| January 10 | 70.0°F (1941) | 8.1°F (1995) | 1.98 in (2017) |
| January 11 | 70.0°F (1959) | 16.0°F (1949) | 1.25 in (1980) |
| January 12 | 75.9°F (2009) | 26.1°F (1949) | 1.10 in (1998) |
| January 13 | 78.1°F (2009) | 24.1°F (1963) | 2.82 in (1993) |
| January 14 | 77.0°F (2026) | 26.1°F (2007) | 2.13 in (1970) |
| January 15 | 78.1°F (2009) | 27.0°F (1963) | 1.14 in (1932) |
| January 16 | 77.0°F (2026) | 26.1°F (1947) | 2.07 in (1973) |
| January 17 | 77.0°F (1948) | 25.0°F (1933) | 2.44 in (1954) |
| January 18 | 75.9°F (2021) | 27.0°F (1943) | 2.07 in (1973) |
| January 19 | 73.0°F (1976) | 26.1°F (1943) | 1.35 in (2010) |
| January 20 | 73.0°F (1976) | 27.0°F (1963) | 2.08 in (1909) |
| January 21 | 70.0°F (1976) | 19.9°F (1937) | 4.80 in (1967) |
| January 22 | 75.0°F (1968) | 21.9°F (1937) | 2.23 in (1983) |
| January 23 | 78.1°F (1948) | 21.9°F (1937) | 1.55 in (1942) |
| January 24 | 75.0°F (1948) | 26.1°F (1932) | 2.08 in (1942) |
| January 25 | 72.0°F (2011) | 24.1°F (1937) | 1.57 in (1909) |
| January 26 | 71.1°F (2014) | 25.0°F (1949) | 1.05 in (1940) |
| January 27 | 70.0°F (1934) | 28.0°F (1948) | 2.45 in (1981) |
| January 28 | 73.0°F (2024) | 26.1°F (1948) | 1.20 in (1981) |
| January 29 | 72.0°F (1931) | 27.0°F (1979) | 1.26 in (1981) |
| January 30 | 72.0°F (1976) | 25.0°F (1975) | 2.47 in (1968) |
| January 31 | 75.0°F (2015) | 26.1°F (1946) | 2.17 in (1963) |