January weather in Suisun City, CA
The average temperature in Suisun City in January is 48.5°F (40.4°F–56.6°F). Average precipitation: 4.68 inches.
January is a winter month in Suisun City, and is cooler than the annual average of 61.7°F. Daily temperatures swing about 16.2°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 9h 37m. For travel, January is a comfortable month to visit.
Avg High
56.6°F
Avg Low
40.4°F
Precipitation
4.68 in
Daylight
9h 37m
January records in Suisun City
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 68.0°F (1996) | 18.0°F (1979) | 1.93 in (1997) |
| January 2 | 69.1°F (2014) | 21.9°F (1961) | 1.68 in (2006) |
| January 3 | 66.9°F (2014) | 21.9°F (1985) | 1.61 in (2017) |
| January 4 | 68.0°F (2014) | 23.0°F (1985) | 2.50 in (1982) |
| January 5 | 68.0°F (1981) | 24.1°F (1972) | 3.64 in (1982) |
| January 6 | 75.0°F (2014) | 25.0°F (1968) | 2.05 in (2019) |
| January 7 | 69.1°F (2012) | 25.0°F (1973) | 1.44 in (1993) |
| January 8 | 64.9°F (1953) | 26.1°F (1955) | 2.01 in (2017) |
| January 9 | 69.1°F (2025) | 25.0°F (1957) | 2.20 in (2023) |
| January 10 | 72.0°F (1953) | 24.1°F (1957) | 3.16 in (2017) |
| January 11 | 71.1°F (1996) | 27.0°F (2011) | 3.65 in (1979) |
| January 12 | 69.1°F (2012) | 26.1°F (1985) | 2.45 in (1973) |
| January 13 | 73.9°F (2009) | 24.1°F (1985) | 2.86 in (1993) |
| January 14 | 75.9°F (2006) | 24.1°F (1963) | 2.35 in (1970) |
| January 15 | 72.0°F (2014) | 23.0°F (2007) | 1.37 in (1978) |
| January 16 | 73.0°F (2014) | 24.1°F (2007) | 2.15 in (1973) |
| January 17 | 73.0°F (2014) | 24.1°F (2007) | 1.46 in (1978) |
| January 18 | 78.1°F (2021) | 28.0°F (1963) | 1.57 in (2016) |
| January 19 | 73.0°F (2006) | 30.0°F (1958) | 2.35 in (1969) |
| January 20 | 72.0°F (2014) | 28.9°F (1966) | 1.53 in (2010) |
| January 21 | 72.0°F (1988) | 25.0°F (1963) | 3.25 in (1967) |
| January 22 | 75.9°F (1968) | 30.0°F (1958) | 1.46 in (2017) |
| January 23 | 73.0°F (2011) | 28.0°F (1962) | 2.50 in (1997) |
| January 24 | 73.9°F (2014) | 24.1°F (1962) | 3.10 in (2000) |
| January 25 | 73.0°F (1976) | 27.0°F (1954) | 1.74 in (1997) |
| January 26 | 69.1°F (2014) | 30.0°F (1962) | 1.29 in (1997) |
| January 27 | 69.1°F (2012) | 26.1°F (1985) | 1.76 in (1995) |
| January 28 | 71.1°F (2024) | 26.1°F (1975) | 1.09 in (1981) |
| January 29 | 70.0°F (1953) | 23.0°F (1957) | 1.15 in (1981) |
| January 30 | 70.0°F (1953) | 23.0°F (1957) | 2.65 in (1963) |
| January 31 | 77.0°F (2015) | 25.0°F (1975) | 2.35 in (1963) |