January weather in Rohnert Park, CA
The average temperature in Rohnert Park in January is 49.1°F (38.4°F–59.7°F). Average precipitation: 5.78 inches.
January is a winter month in Rohnert Park, and is cooler than the annual average of 59°F. Daily temperatures swing about 21.3°F between overnight low and afternoon high. Expect about 14 days with precipitation. Daylight averages about 9h 37m. For travel, January is a wet month.
Avg High
59.7°F
Avg Low
38.4°F
Precipitation
5.78 in
Daylight
9h 37m
January records in Rohnert Park
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 75.0°F (1996) | 19.0°F (1919) | 3.42 in (1997) |
| January 2 | 66.9°F (1911) | 15.1°F (1919) | 2.06 in (2002) |
| January 3 | 66.0°F (1934) | 15.1°F (1919) | 3.53 in (1916) |
| January 4 | 72.0°F (1919) | 19.9°F (1910) | 3.07 in (1982) |
| January 5 | 70.0°F (2003) | 19.0°F (1949) | 5.04 in (1966) |
| January 6 | 80.1°F (1911) | 21.9°F (1950) | 2.13 in (1959) |
| January 7 | 82.9°F (1912) | 21.0°F (1919) | 1.67 in (1948) |
| January 8 | 77.0°F (1912) | 21.0°F (1919) | 2.80 in (1995) |
| January 9 | 84.9°F (1962) | 17.1°F (1937) | 2.23 in (2023) |
| January 10 | 79.0°F (1962) | 19.9°F (1919) | 2.02 in (1968) |
| January 11 | 73.9°F (1962) | 23.0°F (1949) | 2.42 in (1973) |
| January 12 | 84.0°F (2009) | 26.1°F (1933) | 3.25 in (1973) |
| January 13 | 75.0°F (1967) | 21.0°F (1949) | 2.32 in (1969) |
| January 14 | 71.1°F (2009) | 21.0°F (1963) | 1.95 in (1970) |
| January 15 | 70.0°F (2011) | 21.9°F (1949) | 1.65 in (1906) |
| January 16 | 73.9°F (1991) | 21.9°F (1947) | 2.80 in (1921) |
| January 17 | 73.9°F (2021) | 21.9°F (1928) | 3.77 in (1954) |
| January 18 | 80.1°F (2021) | 21.9°F (1928) | 2.40 in (1906) |
| January 19 | 73.9°F (2021) | 21.0°F (1924) | 1.80 in (1911) |
| January 20 | 70.0°F (1976) | 19.9°F (1922) | 3.50 in (1993) |
| January 21 | 73.0°F (1988) | 21.0°F (1922) | 3.57 in (1970) |
| January 22 | 75.9°F (2022) | 21.0°F (1937) | 2.31 in (1997) |
| January 23 | 75.9°F (2006) | 21.0°F (1922) | 3.07 in (1916) |
| January 24 | 75.0°F (1984) | 24.1°F (1922) | 2.19 in (1983) |
| January 25 | 72.0°F (1934) | 23.0°F (1937) | 2.38 in (1997) |
| January 26 | 72.0°F (1984) | 21.9°F (1949) | 1.94 in (1961) |
| January 27 | 77.0°F (1984) | 24.1°F (1949) | 2.48 in (1983) |
| January 28 | 72.0°F (1984) | 21.9°F (1948) | 3.21 in (1926) |
| January 29 | 73.0°F (2024) | 21.9°F (1979) | 1.78 in (1968) |
| January 30 | 72.0°F (1976) | 21.9°F (1975) | 1.85 in (1963) |
| January 31 | 73.0°F (1953) | 21.9°F (1923) | 3.58 in (1926) |